jQuery FileManager Options

Default Value: false

The UI component switches to the active state when users press down the primary mouse button. When this property is set to true, the CSS rules for the active state apply. You can change these rules to customize the component.

Use this property when you display the component on a platform whose guidelines include the active state change for UI components. See the following GitHub repository for an example of this type of platform: MUI.

allowedFileExtensions

Specifies the allowed upload file extensions.

Type:

Array<String>

Default Value: []

The FileManager UI component cannot upload a file and displays an error message when the file's extension is not allowed.

DevExtreme File Manager - Allowed File Extension

jQuery

JavaScript

$(function () {
    $("#file-manager").dxFileManager({
        allowedFileExtensions: [".js", ".json", ".css"]
        // ...
    });
});

Angular

app.component.html

app.module.ts

<dx-file-manager id="fileManager"
    [allowedFileExtensions]="['.js', '.json', '.css']">
    <!-- ... -->
</dx-file-manager>

import { BrowserModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core';
import { AppComponent } from './app.component';
import { DxFileManagerModule } from 'devextreme-angular';

@NgModule({
    declarations: [
        AppComponent
    ],
    imports: [
        BrowserModule,
        DxFileManagerModule
    ],
    //...
})
export class AppModule { }

Vue

App.vue

<template>
    <DxFileManager
        :allowed-file-extensions="allowedFileExtensions" >   
    </DxFileManager>
</template>
<script>
    import 'devextreme/dist/css/dx.light.css';    

    import {
        DxFileManager
    } from 'devextreme-vue/file-manager';

    export default {
        components: {
            DxFileManager
        },
        data() {
            return {
                allowedFileExtensions: ['.js', '.json', '.css']
            };
        }            
    };
</script>

React

App.js

import React from 'react';

import 'devextreme/dist/css/dx.light.css';

import FileManager from 'devextreme-react/file-manager';

const allowedFileExtensions = ['.txt', '.doc', '.png'];

class App extends React.Component {
    render() {
        return (
            <FileManager allowedFileExtensions={allowedFileExtensions} >
            </FileManager>
        );
    }
}
export default App;

ASP.NET MVC Controls

Razor C#

@(Html.DevExtreme().FileManager()
    .AllowedFileExtensions(new[] { ".js", ".json", ".css" })
    // ...
)

ASP.NET Core Controls

Razor C#

@(Html.DevExtreme().FileManager()
    .AllowedFileExtensions(new[] { ".js", ".json", ".css" })
    // ...
)

contextMenu

Configures the context menu settings.

Type: dxFileManagerContextMenu

currentPath

Specifies the path that is used when the FileManager is initialized.

Type:

Default Value: ''

jQuery

JavaScript

$(function () {
    $("#file-manager").dxFileManager({
        currentPath: "Documents/Images"
        // ...
    });
});

Angular

app.component.html

app.module.ts

<dx-file-manager id="fileManager"
    [currentPath]="Documents/Images">
    <!-- ... -->
</dx-file-manager>

import { BrowserModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core';
import { AppComponent } from './app.component';
import { DxFileManagerModule } from 'devextreme-angular';

@NgModule({
    declarations: [
        AppComponent
    ],
    imports: [
        BrowserModule,
        DxFileManagerModule
    ],
    //...
})
export class AppModule { }

Vue

App.vue

<template>
    <DxFileManager
        :current-path="Documents/Images" >   
    </DxFileManager>
</template>
<script>
    import 'devextreme/dist/css/dx.light.css';    

    import {
        DxFileManager
    } from 'devextreme-vue/file-manager';

    export default {
        components: {
            DxFileManager
        },
        data() {
            return {
                // ...
            };
        }            
    };
</script>

React

App.js

import React from 'react';

import 'devextreme/dist/css/dx.light.css';

import FileManager from 'devextreme-react/file-manager';

class App extends React.Component {
    render() {
        return (
            <FileManager currentPath="Documents/Images" >
            </FileManager>
        );
    }
}
export default App;

ASP.NET MVC Controls

Razor C#

@(Html.DevExtreme().FileManager()
    .CurrentPath("Documents/Images")
    // ...
)

ASP.NET Core Controls

Razor C#

@(Html.DevExtreme().FileManager()
    .CurrentPath("Documents/Images")
    // ...
)

currentPathKeys

Specifies an array of path keys to the current location.

Type:

Array<String>

Default Value: []

Each path part has each own key. For example, path "folder1/folder2" has two parts: 'folder1' with the 'f1' key and folder2 with the 'f2' key. To open this location, assign the ["f1","f2"] array of strings to the currentPathKeys property value.

jQuery

JavaScript

$(function () {
    $("#file-manager").dxFileManager({
        currentPathKeys: ["EB458000-0341-6943", "92F5-4722-A7D6-98EB"]
        // ...
    });
});

Angular

app.component.html

app.module.ts

<dx-file-manager id="fileManager"
    [currentPathKeys]="['EB458000-0341-6943', '92F5-4722-A7D6-98EB']">
    <!-- ... -->
</dx-file-manager>

import { BrowserModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core';
import { AppComponent } from './app.component';
import { DxFileManagerModule } from 'devextreme-angular';

@NgModule({
    declarations: [
        AppComponent
    ],
    imports: [
        BrowserModule,
        DxFileManagerModule
    ],
    //...
})
export class AppModule { }

Vue

App.vue

<template>
    <DxFileManager
        :current-path-keys="keys" >   
    </DxFileManager>
</template>
<script>
    import 'devextreme/dist/css/dx.light.css';    

    import {
        DxFileManager
    } from 'devextreme-vue/file-manager';

    export default {
        components: {
            DxFileManager
        },
        data() {
            return {
                keys: ['EB458000-0341-6943', '92F5-4722-A7D6-98EB']
            };
        }            
    };
</script>

React

App.js

import React from 'react';

import 'devextreme/dist/css/dx.light.css';

import FileManager from 'devextreme-react/file-manager';

const keys = ['EB458000-0341-6943', '92F5-4722-A7D6-98EB']

class App extends React.Component {
    render() {
        return (
            <FileManager currentPathKeys={keys} >
            </FileManager>
        );
    }
}
export default App;

ASP.NET MVC Controls

Razor C#

@(Html.DevExtreme().FileManager()
    .CurrentPathKeys(new[] { "EB458000-0341-6943", "92F5-4722-A7D6-98EB" })
    // ...
)

ASP.NET Core Controls

Razor C#

@(Html.DevExtreme().FileManager()
    .CurrentPathKeys(new[] { "EB458000-0341-6943", "92F5-4722-A7D6-98EB" })
    // ...
)

customizeDetailColumns

Customizes columns in details view. Applies only if itemView.mode is "details".

Type:

Array<FileManagerDetailsColumn>

Function parameters:

columns:

The columns before customization.

Return Value:

Array<FileManagerDetailsColumn>

The columns after customization.

jQuery

index.js

$(function() {
    $("#fileManagerContainer").dxFileManager({
        // ...
        customizeDetailColumns: function(columns) {
            // ...
            // Customize the "columns" array objects here
            // ...
            return columns;
        }
    });
});

Angular

app.component.html

app.component.ts

app.module.ts

<dx-file-manager ...
    [customizeDetailColumns]="fileManager_customizeDetailColumns">
</dx-file-manager>

import { Component } from '@angular/core';

@Component({
    selector: 'app-root',
    templateUrl: './app.component.html',
    styleUrls: ['./app.component.css']
})
export class AppComponent {
    // Uncomment the following lines if the function should be executed in the component's context
    // constructor() {
    //     this.fileManager_customizeDetailColumns = this.fileManager_customizeDetailColumns.bind(this);
    // }

    fileManager_customizeDetailColumns(columns) {
        // ...
        // Customize the "columns" array objects here
        // ...
        return columns;
    }
}

import { BrowserModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core';
import { AppComponent } from './app.component';

import { DxFileManagerModule } from 'devextreme-angular';

@NgModule({
    declarations: [
        AppComponent
    ],
    imports: [
        BrowserModule,
        DxFileManagerModule
    ],
    providers: [],
    bootstrap: [AppComponent]
})
export class AppModule { }

Vue

App.vue

<template>
    <DxFileManager ...
        :customize-detail-columns="fileManager_customizeDetailColumns"
    />
</template>

<script>
import 'devextreme/dist/css/dx.light.css';

import DxFileManager from 'devextreme-vue/file-manager';

export default {
    components: {
        DxFileManager
    },
    methods: {
        fileManager_customizeDetailColumns(columns) {
            // ...
            // Customize the "columns" array objects here
            // ...
            return columns;
        }
    }
}
</script>

React

App.js

import React from 'react';

import 'devextreme/dist/css/dx.light.css';

import FileManager from 'devextreme-react/file-manager';

class App extends React.Component {
    // Uncomment the following lines if the function should be executed in the component's context
    // constructor(props) {
    //     super(props);
    //     this.fileManager_customizeDetailColumns = this.fileManager_customizeDetailColumns.bind(this);
    // }

    fileManager_customizeDetailColumns(columns) {
        // ...
        // Customize the "columns" array objects here
        // ...
        return columns;
    }

    render() {
        return (
            <FileManager ...
                customizeDetailColumns={this.fileManager_customizeDetailColumns}
            />
        );
    }
}
export default App;

ASP.NET Core Controls

Razor C#

@(Html.DevExtreme().FileManager()
    @* ... *@
    .CustomizeDetailColumns("customizeDetailColumns")
)

<script type="text/javascript">
    function customizeDetailColumns(columns) {
        // ...
        // Customize the "columns" array objects here
        // ...
        return columns;
    }
</script>

ASP.NET MVC Controls

Razor C#

@(Html.DevExtreme().FileManager()
    @* ... *@
    .CustomizeDetailColumns("customizeDetailColumns")
)

<script type="text/javascript">
    function customizeDetailColumns(columns) {
        // ...
        // Customize the "columns" array objects here
        // ...
        return columns;
    }
</script>

customizeThumbnail

Allows you to provide custom icons to be used as thumbnails.

Type:

Function parameters:

fileSystemItem:

FileSystemItem

The file or folder whose thumbnail is being customized.

Return Value:

An icon to use as a thumbnail.

This function should return one of the following:

The icon's URL
The icon's name if the icon is from the DevExtreme icon library
The icon's CSS class if the icon is from an external icon library (see External Icon Libraries)
The icon in the Base64 format

disabled

Specifies whether the UI component responds to user interaction.

Type:

Default Value: false

elementAttr

Specifies the global attributes to be attached to the UI component's container element.

Type: any

Default Value: {}

jQuery

$(function(){
    $("#fileManagerContainer").dxFileManager({
        // ...
        elementAttr: {
            id: "elementId",
            class: "class-name"
        }
    });
});

Angular

HTML

TypeScript

<dx-file-manager ...
    [elementAttr]="{ id: 'elementId', class: 'class-name' }">
</dx-file-manager>

import { DxFileManagerModule } from "devextreme-angular";
// ...
export class AppComponent {
    // ...
}
@NgModule({
    imports: [
        // ...
        DxFileManagerModule
    ],
    // ...
})

Vue

App.vue

<template>
    <DxFileManager ...
        :element-attr="fileManagerAttributes">
    </DxFileManager>
</template>

<script>
import DxFileManager from 'devextreme-vue/file-manager';

export default {
    components: {
        DxFileManager
    },
    data() {
        return {
            fileManagerAttributes: {
                id: 'elementId',
                class: 'class-name'
            }
        }
    }
}
</script>

React

App.js

import React from 'react';

import FileManager from 'devextreme-react/file-manager';

class App extends React.Component {
    fileManagerAttributes = {
        id: 'elementId',
        class: 'class-name'
    }

    render() {
        return (
            <FileManager ...
                elementAttr={this.fileManagerAttributes}>
            </FileManager>
        );
    }
}
export default App;

fileSystemProvider

Specifies the file system provider.

Type: any

Default Value: null

File system providers are components that provide APIs used to access and modify virtual file systems.

The following example illustrates how to configure an Object file system provider:

jQuery

index.js

data.js

$(function () {
    $("#file-manager").dxFileManager({
        fileSystemProvider: fileSystem,
        // ...
    });
});

var fileSystem = [
    {
        name: "Documents",
        isDirectory: true,
        items: [
            {
                name: "Projects",
                isDirectory: true,
                items: [
                    {
                        name: "About.rtf",
                        isDirectory: false,
                        size: 1024
                    },
                    {
                        name: "Passwords.rtf",
                        isDirectory: false,
                        size: 2048
                    }
                ]
            },
            {
                name: "About.xml",
                isDirectory: false,
                size: 1024
            },
            //...
        ],
    },
    //...
];

Angular

app.component.html

app.component.ts

app.module.ts

<dx-file-manager id="fileManager"
    [fileSystemProvider]="fileSystem">
</dx-file-manager>

import { Component } from '@angular/core';    

@Component({
    selector: 'app-root',
    templateUrl: './app.component.html',
    styleUrls: ['./app.component.css']
})

export class AppComponent {
    fileSystem = [{
        name: "Documents",
        isDirectory: true,
        items: [{
            name: "Projects",
            isDirectory: true,
            items: [{
                name: "About.rtf",
                isDirectory: false,
                size: 1024
            }, {
                name: "Passwords.rtf",
                isDirectory: false,
                size: 2048
            }]
        },{
            name: "About.xml",
            isDirectory: false,
            size: 1024
        }]
    }];    
}

import { BrowserModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core';
import { AppComponent } from './app.component';
import { DxFileManagerModule } from 'devextreme-angular';

@NgModule({
    declarations: [
        AppComponent
    ],
    imports: [
        BrowserModule,
        DxFileManagerModule
    ],
    //...
})
export class AppModule { }

Vue

App.vue

data.js

<template>
    <DxFileManager
        :file-system-provider="fileSystem">
    </DxFileManager>
</template>

<script>
import 'devextreme/dist/css/dx.light.css';     

import { 
    DxFileManager
} from 'devextreme-vue/file-manager';
import { fileSystem } from "./data.js";

export default {
    components: {
        DxFileManager
    },

    data() {
        return {
            fileSystem
        };
    }
};
</script>

export const fileSystem = [{
    'name': 'Documents',
    'isDirectory': true,
    'items': [{
        'name': 'Projects',
        'isDirectory': true,
        'items': [{
            'name': 'About.rtf',
            'isDirectory': false,
            'size': 1024
        }, {
            'name': 'Passwords.rtf',
            'isDirectory': false,
            'size': 2048
        }]
    }, {
        'name': 'About.xml',
        'isDirectory': false,
        'size': 1024
    }]
}];

React

App.js

data.js

import React from 'react';

import 'devextreme/dist/css/dx.light.css';

import FileManager from 'devextreme-react/file-manager';
import { fileSystem } from './data.js';

class App extends React.Component {
    render() {
        return (
            <FileManager fileSystemProvider={fileSystem}>
            </FileManager>
        );
    }
}
export default App;

export const fileSystem = [{
    'name': 'Documents',
    'isDirectory': true,
    'items': [{
        'name': 'Projects',
        'isDirectory': true,
        'items': [{
            'name': 'About.rtf',
            'isDirectory': false,
            'size': 1024
        }, {
            'name': 'Passwords.rtf',
            'isDirectory': false,
            'size': 2048
        }]
    }, {
        'name': 'About.xml',
        'isDirectory': false,
        'size': 1024
    }]
}];

ASP.NET MVC Controls

Razor C#

@(Html.DevExtreme().FileManager()
    .FileSystemProvider(new JS("fileSystem"))
)
<script src="~/Scripts/data/data.js"></script>

<!-- data.js -->
var fileSystem = [{
    name: "Documents",
    isDirectory: true,
    items: [
        {
        name: "Projects",
        isDirectory: true,
        items: [
            {
            name: "About.rtf",
            isDirectory: false,
            size: 1024
        }, {
            name: "Passwords.rtf",
            isDirectory: false,
            size: 2048
        }]
    }, {
        name: "About.xml",
        isDirectory: false,
        size: 1024
    }]
}];

ASP.NET Core Controls

Razor C#

@(Html.DevExtreme().FileManager()
    .FileSystemProvider(new JS("fileSystem"))
)
<script src="~/Scripts/data/data.js"></script>

<!-- data.js -->
var fileSystem = [{
    name: "Documents",
    isDirectory: true,
    items: [
        {
        name: "Projects",
        isDirectory: true,
        items: [
            {
            name: "About.rtf",
            isDirectory: false,
            size: 1024
        }, {
            name: "Passwords.rtf",
            isDirectory: false,
            size: 2048
        }]
    }, {
        name: "About.xml",
        isDirectory: false,
        size: 1024
    }]
}];

Refer to File System Providers for information on supported file system providers.

focusedItemKey

Specifies a key of the initially or currently focused item.

Type:

Default Value: null

jQuery

JavaScript

$(function() {
    $("#fileManagerContainer").dxFileManager({
        // ...
        focusedItemKey: "item1_key"
    });
});

Angular

app.component.html

app.module.ts

<dx-file-manager id="fileManager"
    [focusedItemKey]="item1_key">
    <!-- ... -->
</dx-file-manager>

import { BrowserModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core';
import { AppComponent } from './app.component';
import { DxFileManagerModule } from 'devextreme-angular';

@NgModule({
    declarations: [
        AppComponent
    ],
    imports: [
        BrowserModule,
        DxFileManagerModule
    ],
    //...
})
export class AppModule { }

Vue

App.vue

<template>
    <DxFileManager
        :focused-item-key="item1_key" >   
    </DxFileManager>
</template>
<script>
    import 'devextreme/dist/css/dx.light.css';    

    import {
        DxFileManager
    } from 'devextreme-vue/file-manager';

    export default {
        components: {
            DxFileManager
        },
        data() {
            return {
                // ...
            };
        }            
    };
</script>

React

App.js

import React from 'react';

import 'devextreme/dist/css/dx.light.css';

import FileManager from 'devextreme-react/file-manager';

class App extends React.Component {
    render() {
        return (
            <FileManager focusedItemKey="item1_key" >
            </FileManager>
        );
    }
}
export default App;

ASP.NET MVC Controls

Razor C#

@(Html.DevExtreme().FileManager()
    .FocusedItemKey("item1_key")
    // ...
)

ASP.NET Core Controls

Razor C#

@(Html.DevExtreme().FileManager()
    .FocusedItemKey("item1_key")
    // ...
)

focusStateEnabled

Specifies whether the UI component can be focused using keyboard navigation.

Type:

Default Value: false

height

Specifies the UI component's height.

Type:

|

|

Return Value:

|

The UI component's height.

Default Value: undefined

This property accepts a value of one of the following types:

Number
The height in pixels.
String
A CSS-accepted measurement of height. For example, "55px", "80%", "inherit".
Function
A function returning either of the above. For example:
JavaScript
```
height: function() {
    return window.innerHeight / 1.5;
}
```

hint

Specifies text for a hint that appears when a user pauses on the UI component.

Type:

Default Value: undefined

hoverStateEnabled

Specifies whether the UI component changes its state when a user pauses on it.

Type:

Default Value: false

itemView

Configures the file and folder view.

Type:

Default Value: null

NOTE

Set the itemView.mode property to details to configure columns in the UI component.

DevExtreme File Manager - Item View

jQuery

JavaScript

$(function () {
    $("#file-manager").dxFileManager({
        itemView: {
            mode: "thumbnails",
            showFolders: false,
            showParentFolder: false
        }
        // ...
    });
});

Angular

app.component.html

app.module.ts

<dx-file-manager>
    <dxo-item-view 
        mode="thumbnails"
        showFolders="false"
        showParentFolder="false" >
    </dxo-item-view>
    <!-- ... -->
</dx-file-manager>

import { BrowserModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core';
import { AppComponent } from './app.component';
import { DxFileManagerModule } from 'devextreme-angular';

@NgModule({
    declarations: [
        AppComponent
    ],
    imports: [
        BrowserModule,
        DxFileManagerModule
    ],
    //...
})
export class AppModule { }

Vue

App.vue

<template>
    <DxFileManager>   
        <DxItemView
            mode="thumbnails"
            :show-folders="false"
            :show-parent-folder="false"
        >
        </DxItemView>
    </DxFileManager>
</template>
<script>
    import 'devextreme/dist/css/dx.light.css';    

    import {
        DxFileManager,
        DxItemView
    } from 'devextreme-vue/file-manager';

    export default {
        components: {
            DxFileManager,
            DxItemView
        },
        data() {
            return {
                //...
            };
        }            
    };
</script>

React

App.js

import React from 'react';

import 'devextreme/dist/css/dx.light.css';

import FileManager, { ItemView } from 'devextreme-react/file-manager';

class App extends React.Component {
    render() {
        return (
            <FileManager>
                <ItemView 
                    mode="thumbnails"
                    showFolder={false}
                    showParentFolder={false}
                />
            </FileManager>
        );
    }
}
export default App;

ASP.NET Core Controls

Razor C#

@(Html.DevExtreme().Gantt()
    .ItemView(v => v
        .Mode()
        .ShowFolder(false)
        .ShowParentFolder(false)
    )
)

ASP.NET MVC Controls

Razor C#

@(Html.DevExtreme().Gantt()
    .ItemView(v => v
        .Mode()
        .ShowFolder(false)
        .ShowParentFolder(false)
    )
)

notifications

Configures notification settings.

Type:

onContentReady

A function that is executed when the UI component's content is ready and each time the content is changed.

Type:

Function parameters:

e:

Information about the event.

Object structure:

Name

Type

Description

component

FileManager

The UI component's instance.

element

HTMLElement | jQuery

The UI component's container. It is an HTML Element or a jQuery Element when you use jQuery.

model

any

Model data. Available only when using Knockout.

Default Value: null

onContextMenuItemClick

A function that is executed when a context menu item is clicked.

Type:

Function parameters:

e:

Information about the event that caused the function's execution.

Object structure:

Name	Type	Description
component	FileManager	The UI component's instance.
element	HTMLElement \| jQuery	The UI component's container. It is an HTML Element or a jQuery Element when you use jQuery.
event	Event (jQuery or EventObject)	The event that caused the function to execute. It is an EventObject or a jQuery.Event when you use jQuery.
fileSystemItem	FileSystemItem	The file system item for which you invoke the context menu.
itemData	Object	The clicked item's data.
itemElement	HTMLElement \| jQuery	The item's container. It is an HTML Element or a jQuery Element when you use jQuery.
itemIndex	Number	The clicked item's index.
model	any	Model data. Available only if you use Knockout.
viewArea	'navPane' \| 'itemView'	Specifies whether the context menu is invoked in the navigation panel or in the items area.

Default Value: null

jQuery

JavaScript

$(function () {
    $("#file-manager").dxFileManager({
        contextMenu: {
            items: [
                {
                    text: "Create .txt Document",
                    extension: ".txt"
                },
                {
                    text: "Create .rtf Document",
                    extension: ".rtf"
                },
                {
                    text: "Create .xls Document",
                    extension: ".xls"
                }
            ]
        }
        onContextMenuItemClick: onItemClick
        // ...
    });
});
function onItemClick(args) {
    if(args.itemData.extension) {
        // your code
    }
}

Angular

app.component.html

app.component.ts

app.module.ts

<dx-file-manager 
    (onContextMenuItemClick)="onItemClick($event)">
    <dxo-context-menu>
        <dxi-item text="Create .txt Document" [options]="{ extension: '.txt' }"></dxi-item>
        <dxi-item text="Create .rtf Document" [options]="{ extension: '.rtf' }"></dxi-item>
        <dxi-item text="Create .xls Document" [options]="{ extension: '.xls' }"></dxi-item>
    </dxo-context-menu>
    <!-- ... -->
</dx-file-manager>

import { Component } from '@angular/core';

@Component({
    selector: 'app-root',
    templateUrl: './app.component.html',
    styleUrls: ['./app.component.css']
})

export class AppComponent {
    onItemClick(e){
        if(e.itemData.options.extension) {
            // your code
        }            
    }
}

import { BrowserModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core';
import { AppComponent } from './app.component';
import { DxFileManagerModule } from 'devextreme-angular';

@NgModule({
    imports: [
        DxFileManagerModule
    ],        
    declarations: [AppComponent],
    bootstrap: [AppComponent]
})
export class AppModule { }

Vue

App.vue

<template>
    <DxFileManager 
        :on-context-menu-item-click="onItemClick" >
        <DxContextMenu>
            <DxItem text="Create .txt Document" :options="{ extension: '.txt' }" />
            <DxItem text="Create .rtf Document" :options="{ extension: '.rtf' }" />
            <DxItem text="Create .xls Document" :options="{ extension: '.xls' }" />
        </DxContextMenu>            
    </DxFileManager>
</template>

<script>
    import 'devextreme/dist/css/dx.light.css';

    import { 
        DxFileManager, 
        DxContextMenu, 
        DxItem
        // ... 
    } from 'devextreme-vue/file-manager';

    export default {
        components: { 
            DxFileManager, 
            DxContextMenu, 
            DxItem
            // ... 
        },
        methods: {
            onItemClick(e) {
                if(e.itemData.options.extension) {
                    // your code
                }                     
            }
        },         
        data() {
            return {
                //...
            };
        } 
    };
</script>

React

App.js

import React from 'react';
import FileManager, { ContextMenu, Item } from 'devextreme-react/file-manager';

const App = () => {
    const onItemClick = (e) => {
        if(e.itemData.extension) {
            // your code
        }
    };

    return (
        <FileManager onContextMenuItemClick={onItemClick}>
            <ContextMenu>
                <Item text="Create .txt Document" extension=".txt" />
                <Item text="Create .rtf Document" extension=".rtf" />
                <Item text="Create .xls Document" extension=".xls" />
            </ContextMenu>                
        </FileManager>
    );
};

export default App;

ASP.NET MVC Controls

Razor C#

@(Html.DevExtreme().FileManager()
    .ContextMenu(cm => {
        cm.Items(i => {
            i.Add()
                .Text("Create .txt Document")
                .Option("extension", ".txt");
            i.Add()
                .Text("Create .rtf Document")
                .Option("extension", ".rtf");
            i.Add()
                .Text("Create .xls Document")
                .Option("extension", ".xls");
        });
    })
    .OnContextMenuItemClick("onItemClick");
)

<script>
    function onItemClick(e) {
        if(e.itemData.extension) {
            // your code
        }
    }
</script>

ASP.NET Core Controls

Razor C#

@(Html.DevExtreme().FileManager()
    .ContextMenu(cm => {
        cm.Items(i => {
            i.Add()
                .Text("Create .txt Document")
                .Option("extension", ".txt");
            i.Add()
                .Text("Create .rtf Document")
                .Option("extension", ".rtf");
            i.Add()
                .Text("Create .xls Document")
                .Option("extension", ".xls");
        });
    })
    .OnContextMenuItemClick("onItemClick");
)

<script>
    function onItemClick(e) {
        if(e.itemData.extension) {
            // your code
        }
    }
</script>

onContextMenuShowing

A function that is executed before a context menu is displayed.

Type:

Function parameters:

e:

Information about the event that caused the function's execution.

Object structure:

Name	Type	Description
cancel	Boolean	Allows you to cancel showing the context menu.
component	FileManager	The UI component's instance.
element	HTMLElement \| jQuery	The UI component's container. It is an HTML Element or a jQuery Element when you use jQuery.
event	Event (jQuery or EventObject)	The event that caused the function to execute. It is an EventObject or a jQuery.Event when you use jQuery.
fileSystemItem	FileSystemItem	The file system item for which you invoke the context menu.
model	any	Model data. Available only if you use Knockout.
targetElement	HTMLElement \| jQuery	The file system item's container. It is an HTML Element or a jQuery Element when you use jQuery. This element can be a grid element or a thumbnail (for the items view area), or a tree view node (for the navigation panel). The targetElement field value is 'undefined' if you click on empty space in the items view area.
viewArea	'navPane' \| 'itemView'	Specifies whether the context menu is invoked in the navigation panel or in the items view area.

Default Value: null

jQuery

index.js

$(function() {
    $("#file-manager").dxFileManager({
        // ...
        onContextMenuShowing: function (e) {
            const contextMenuItems = ['create', 'rename', 'delete'];
            if (e.viewArea === 'itemView'){
                // your code
                e.cancel = true;
            } else {
                // your code
                e.component.option('contextMenu.items', contextMenuItems);
            }
        }
    });
});

Angular

TypeScript

HTML

import { DxFileManagerModule } from "devextreme-angular";
// ...
export class AppComponent {
    onContextMenuShowing(e) {
        const contextMenuItems = ['create', 'rename', 'delete'];
        if (e.viewArea === 'itemView'){
            // your code
            e.cancel = true;
        } else {
            // your code
            e.component.option('contextMenu.items', contextMenuItems);
        }
    }
}
@NgModule({
    imports: [
        // ...
        DxFileManagerModule
    ],
    // ...
})

<dx-file-manager ...
    (onContextMenuShowing)="onContextMenuShowing($event)">
</dx-file-manager>

Vue

App.vue

<template>
    <DxFileManager
        ...
        @context-menu-showing="onContextMenuShowing"
    />
</template>

<script>
import 'devextreme/dist/css/dx.light.css';

import DxFileManager from 'devextreme-vue/file-manager';

export default {
    components: {
        DxFileManager
    },
    methods: {
        onContextMenuShowing(e) {
            const contextMenuItems = ['create', 'rename', 'delete'];
            if (e.viewArea === 'itemView'){
                // your code
                e.cancel = true;
            } else {
                // your code
                e.component.option('contextMenu.items', contextMenuItems);
            }                
        }
    }
}
</script>

React

App.js

import React from 'react';
import FileManager, { ContextMenu } from 'devextreme-react/file-manager';

const App = () => {
    const onContextMenuShowing = (e) => {
        const contextMenuItems = ['create', 'rename', 'delete'];
        if (e.viewArea === 'itemView'){
            // your code
            e.cancel = true;
        } else {
            // your code
            e.component.option('contextMenu.items', contextMenuItems);
        }            
    };

    return (
        <FileManager ...
            onContextMenuShowing={onContextMenuShowing} />            
    );
}

export default App;

ASP.NET MVC Controls

Razor C#

@(Html.DevExtreme().FileManager()
    .ID("file-manager")
    // ...
    .onContextMenuShowing("fm_contextMenuShowing_handler")
)
<script>
    function fm_contextMenuShowing_handler(e) {
        const contextMenuItems = ['create', 'rename', 'delete'];
        if (e.viewArea === 'itemView'){
            // your code
            e.cancel = true;
        } else {
            // your code
            e.component.option('contextMenu.items', contextMenuItems);
        }
    }
</script>

ASP.NET Core Controls

Razor C#

@(Html.DevExtreme().FileManager()
    .ID("file-manager")
    // ...
    .onContextMenuShowing("fm_contextMenuShowing_handler")
)
<script>
    function fm_contextMenuShowing_handler(e) {
        const contextMenuItems = ['create', 'rename', 'delete'];
        if (e.viewArea === 'itemView'){
            // your code
            e.cancel = true;
        } else {
            // your code
            e.component.option('contextMenu.items', contextMenuItems);
        }
    }
</script>

onCurrentDirectoryChanged

A function that is executed when the current directory is changed.

Type:

Function parameters:

e:

Information about the event that caused the function's execution.

Object structure:

Name	Type	Description
component	FileManager	The UI component's instance.
directory	FileSystemItem	The current directory.
element	HTMLElement \| jQuery	The UI component's container. It is an HTML Element or a jQuery Element when you use jQuery.
model	any	The model data. Available only if you use Knockout.

Default Value: null

jQuery

JavaScript

$(function() {
    $("#fileManagerContainer").dxFileManager({
        // ...
        onCurrentDirectoryChanged: function(e) {
            // Your code goes here
        }
    });
});

Angular

app.component.html

app.component.ts

app.module.ts

<dx-file-manager 
    (onCurrentDirectoryChanged)="onDirectoryChanged($event)">
    <!-- ... -->
</dx-file-manager>

import { Component } from '@angular/core';

@Component({
    selector: 'app-root',
    templateUrl: './app.component.html',
    styleUrls: ['./app.component.css']
})

export class AppComponent {
    onDirectoryChanged(e){
        // your code
    }
}

import { BrowserModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core';
import { AppComponent } from './app.component';
import { DxFileManagerModule } from 'devextreme-angular';

@NgModule({
    imports: [
        DxFileManagerModule
    ],        
    declarations: [AppComponent],
    bootstrap: [AppComponent]
})
export class AppModule { }

Vue

App.vue

<template>
    <DxFileManager 
        :on-current-directory-changed="onDirectoryChanged" >            
    </DxFileManager>
</template>

<script>
    import 'devextreme/dist/css/dx.light.css';

    import { 
        DxFileManager
        // ... 
    } from 'devextreme-vue/file-manager';

    export default {
        components: { 
            DxFileManager
            // ... 
        },
        methods: {
            onDirectoryChanged(e) {
                // your code
            }
        },         
        data() {
            return {
                //...
            };
        } 
    };
</script>

React

App.js

import React from 'react';
import FileManager from 'devextreme-react/file-manager';

const App = () => {
    const onDirectoryChanged = (e) => {
        // your code
    };

    return (
        <FileManager onCurrentDirectoryChanged={onDirectoryChanged}>
            <!-- ... -->               
        </FileManager>
    );
};

export default App;

ASP.NET MVC Controls

Razor C#

@(Html.DevExtreme().FileManager()
    .OnCurrentDirectoryChanged("onDirectoryChanged");
    // ...
)

<script>
    function onDirectoryChanged(e) {
        // your code
    }
</script>

ASP.NET Core Controls

Razor C#

@(Html.DevExtreme().FileManager()
    .OnCurrentDirectoryChanged("onDirectoryChanged");
    // ...
)

<script>
    function onDirectoryChanged(e) {
        // your code
    }
</script>

onDisposing

A function that is executed before the UI component is disposed of.

Type:

Function parameters:

e:

Information about the event.

Object structure:

Name

Type

Description

component

FileManager

The UI component's instance.

element

HTMLElement | jQuery

The UI component's container. It is an HTML Element or a jQuery Element when you use jQuery.

model

any

Model data. Available only if you use Knockout.

Default Value: null

onErrorOccurred

A function that is executed when an error occurs.

Type:

Function parameters:

e:

Information about the event that caused the function's execution.

Object structure:

Name	Type	Description
component	FileManager	The UI component's instance.
element	HTMLElement \| jQuery	The UI component's container. It is an HTML Element or a jQuery Element when you use jQuery.
errorCode	Number	The error code. The following error codes are supported: NoAccess = 0 FileExists = 1 FileNotFound = 2 DirectoryExists = 3 DirectoryNotFound = 4 WrongFileExtension = 5 MaxFileSizeExceeded = 6 Other = 32767
errorText	String	The error message.
fileSystemItem	FileSystemItem	The processed file or directory.
model	any	Model data. Available only if you use Knockout.

Default Value: null

jQuery

JavaScript

$(function() {
    $("#fileManagerContainer").dxFileManager({
        // ...
        onErrorOccurred: function(e) {
            // Your code goes here
        }
    });
});

Angular

app.component.html

app.component.ts

app.module.ts

<dx-file-manager 
    (onErrorOccurred)="onError($event)">
    <!-- ... -->
</dx-file-manager>

import { Component } from '@angular/core';

@Component({
    selector: 'app-root',
    templateUrl: './app.component.html',
    styleUrls: ['./app.component.css']
})

export class AppComponent {
    onOccurred(e){
        // your code
    }
}

import { BrowserModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core';
import { AppComponent } from './app.component';
import { DxFileManagerModule } from 'devextreme-angular';

@NgModule({
    imports: [
        DxFileManagerModule
    ],        
    declarations: [AppComponent],
    bootstrap: [AppComponent]
})
export class AppModule { }

Vue

App.vue

<template>
    <DxFileManager 
        :on-error-occurred="onError" >            
    </DxFileManager>
</template>

<script>
    import 'devextreme/dist/css/dx.light.css';

    import { 
        DxFileManager
        // ... 
    } from 'devextreme-vue/file-manager';

    export default {
        components: { 
            DxFileManager
            // ... 
        },
        methods: {
            onError(e) {
                // your code
            }
        },         
        data() {
            return {
                //...
            };
        } 
    };
</script>

React

App.js

import React from 'react';
import FileManager from 'devextreme-react/file-manager';

const App = () => {
    const onError = (e) => {
        // your code
    };

    return (
        <FileManager onErrorOccurred={onError}>
            <!-- ... -->               
        </FileManager>
    );
};

export default App;

ASP.NET MVC Controls

Razor C#

@(Html.DevExtreme().FileManager()
    .OnErrorOccurred("onError");
    // ...
)

<script>
    function onError(e) {
        // your code
    }
</script>

ASP.NET Core Controls

Razor C#

@(Html.DevExtreme().FileManager()
    .OnErrorOccurred("onError");
    // ...
)

<script>
    function onError(e) {
        // your code
    }
</script>

onFocusedItemChanged

A function that is executed when the focused item is changed.

Type:

Function parameters:

e:

Information about the event that caused the function's execution.

Object structure:

Name	Type	Description
component	FileManager	The UI component's instance.
element	HTMLElement \| jQuery	The UI component's container. It is an HTML Element or a jQuery Element when you use jQuery.
item	FileSystemItem	The currently focused file or directory.
itemElement	HTMLElement \| jQuery	The item's container. It is an HTML Element or a jQuery Element when you use jQuery.
model	any	The model data. Available only if you use Knockout.

Default Value: null

jQuery

JavaScript

$(function() {
    $("#fileManagerContainer").dxFileManager({
        // ...
        onFocusedItemChanged: function(e) {
            // Your code goes here
        }
    });
});

Angular

app.component.html

app.component.ts

app.module.ts

<dx-file-manager 
    (onFocusedItemChanged)="onFocusedItemChangedEv($event)">
    <!-- ... -->
</dx-file-manager>

import { Component } from '@angular/core';

@Component({
    selector: 'app-root',
    templateUrl: './app.component.html',
    styleUrls: ['./app.component.css']
})

export class AppComponent {
    onFocusedItemChangedEv(e){
        // your code
    }
}

import { BrowserModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core';
import { AppComponent } from './app.component';
import { DxFileManagerModule } from 'devextreme-angular';

@NgModule({
    imports: [
        DxFileManagerModule
    ],        
    declarations: [AppComponent],
    bootstrap: [AppComponent]
})
export class AppModule { }

Vue

App.vue

<template>
    <DxFileManager 
        :on-focused-item-changed="onFocusedItemChangedEv" >            
    </DxFileManager>
</template>

<script>
    import 'devextreme/dist/css/dx.light.css';

    import { 
        DxFileManager
        // ... 
    } from 'devextreme-vue/file-manager';

    export default {
        components: { 
            DxFileManager
            // ... 
        },
        methods: {
            onFocusedItemChangedEv(e) {
                // your code
            }
        },         
        data() {
            return {
                //...
            };
        } 
    };
</script>

React

App.js

import React from 'react';
import FileManager from 'devextreme-react/file-manager';

const App = () => {
    const onFocusedItemChangedEv = (e) => {
        // your code
    };

    return (
        <FileManager onFocusedItemChanged={onFocusedItemChangedEv}>
            <!-- ... -->               
        </FileManager>
    );
};

export default App;

ASP.NET MVC Controls

Razor C#

@(Html.DevExtreme().FileManager()
    .OnFocusedItemChanged("onFocusedItemChangedEv");
    // ...
)

<script>
    function onFocusedItemChangedEv(e) {
        // your code
    }
</script>

ASP.NET Core Controls

Razor C#

@(Html.DevExtreme().FileManager()
    .OnFocusedItemChanged("onFocusedItemChangedEv");
    // ...
)

<script>
    function onFocusedItemChangedEv(e) {
        // your code
    }
</script>

onInitialized

A function used in JavaScript frameworks to save the UI component instance.

Type:

Function parameters:

e:

Information about the event.

Object structure:

Name

Type

Description

component

FileManager

The UI component's instance.

element

HTMLElement | jQuery

The UI component's container. It is an HTML Element or a jQuery Element when you use jQuery.

Default Value: null

onOptionChanged

A function that is executed after a UI component property is changed.

Type:

Function parameters:

e:

Information about the event.

Object structure:

Name	Type	Description
model	any	Model data. Available only if you use Knockout.
fullName	String	The path to the modified property that includes all parent properties.
element	HTMLElement \| jQuery	The UI component's container. It is an HTML Element or a jQuery Element when you use jQuery.
component	FileManager	The UI component's instance.
name	String	The modified property if it belongs to the first level. Otherwise, the first-level property it is nested into.
value	any	The modified property's new value.

Default Value: null

The following example shows how to subscribe to component property changes:

jQuery

index.js

$(function() {
    $("#fileManagerContainer").dxFileManager({
        // ...
        onOptionChanged: function(e) {
            if(e.name === "changedProperty") {
                // handle the property change here
            }
        }
    });
});

Angular

app.component.html

app.component.ts

app.module.ts

<dx-file-manager ...
    (onOptionChanged)="handlePropertyChange($event)"> 
</dx-file-manager>

import { Component } from '@angular/core'; 

@Component({ 
    selector: 'app-root', 
    templateUrl: './app.component.html', 
    styleUrls: ['./app.component.css'] 
}) 

export class AppComponent { 
    // ...
    handlePropertyChange(e) {
        if(e.name === "changedProperty") { 
            // handle the property change here
        }
    }
}

import { BrowserModule } from '@angular/platform-browser'; 
import { NgModule } from '@angular/core'; 
import { AppComponent } from './app.component'; 
import { DxFileManagerModule } from 'devextreme-angular'; 

@NgModule({ 
    declarations: [ 
        AppComponent 
    ], 
    imports: [ 
        BrowserModule, 
        DxFileManagerModule 
    ], 
    providers: [ ], 
    bootstrap: [AppComponent] 
}) 

export class AppModule { }

Vue

App.vue

<template> 
    <DxFileManager ...
        @option-changed="handlePropertyChange"
    />            
</template> 

<script>  
import 'devextreme/dist/css/dx.light.css'; 
import DxFileManager from 'devextreme-vue/file-manager'; 

export default { 
    components: { 
        DxFileManager
    }, 
    // ...
    methods: { 
        handlePropertyChange: function(e) {
            if(e.name === "changedProperty") {
                // handle the property change here
            }
        }
    } 
} 
</script>

React

App.js

import React from 'react';  
import 'devextreme/dist/css/dx.light.css'; 

import FileManager from 'devextreme-react/file-manager'; 

const handlePropertyChange = (e) => {
    if(e.name === "changedProperty") {
        // handle the property change here
    }
}

export default function App() { 
    return ( 
        <FileManager ...
            onOptionChanged={handlePropertyChange}
        />        
    ); 
}

onSelectedFileOpened

A function that is executed when the selected file is opened.

Type:

Function parameters:

e:

Information about the event that caused the function's execution.

Object structure:

Name	Type	Description
component	FileManager	The UI component's instance.
element	HTMLElement \| jQuery	The UI component's container. It is an HTML Element or a jQuery Element when you use jQuery.
file	FileSystemItem	The opened file.
model	any	Model data. Available only if you use Knockout.

Default Value: null

jQuery

index.js

$(function() {
    $("#fileManagerContainer").dxFileManager({
        // ...
        onSelectedFileOpened: function(e) {
            // Your code goes here
        }
    });
});

Angular

app.component.html

app.component.ts

app.module.ts

<dx-file-manager ...
    (onSelectedFileOpened)="fileManager_onSelectedFileOpened($event)">
</dx-file-manager>

import { Component } from '@angular/core';

@Component({
    selector: 'app-root',
    templateUrl: './app.component.html',
    styleUrls: ['./app.component.css']
})
export class AppComponent {
    fileManager_onSelectedFileOpened(e) {
        // Your code goes here
    }
}

import { BrowserModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core';
import { AppComponent } from './app.component';

import { DxFileManagerModule } from 'devextreme-angular';

@NgModule({
    declarations: [
        AppComponent
    ],
    imports: [
        BrowserModule,
        DxFileManagerModule
    ],
    providers: [],
    bootstrap: [AppComponent]
})
export class AppModule { }

Vue

App.vue

<template>
    <DxFileManager ...
        :on-selected-file-opened="fileManager_onSelectedFileOpened"
    />
</template>

<script>
import 'devextreme/dist/css/dx.light.css';

import DxFileManager from 'devextreme-vue/file-manager';

export default {
    components: {
        DxFileManager
    },
    methods: {
        fileManager_onSelectedFileOpened(e) {
            // Your code goes here
        }
    }
}
</script>

React

App.js

import React from 'react';

import 'devextreme/dist/css/dx.light.css';

import FileManager from 'devextreme-react/file-manager';

class App extends React.Component {
    fileManager_onSelectedFileOpened(e) {
        // Your code goes here
    }

    render() {
        return (
            <FileManager ...
                onSelectedFileOpened={this.fileManager_onSelectedFileOpened}
            />
        );
    }
}
export default App;

ASP.NET MVC Controls

Razor C#

@(Html.DevExtreme().FileManager()
    .OnSelectedFileOpened("fileManager_onSelectedFileOpened");
    // ...
)

<script>
    function fileManager_onSelectedFileOpened(e) {
        // your code
    }
</script>

ASP.NET Core Controls

Razor C#

@(Html.DevExtreme().FileManager()
    .OnSelectedFileOpened("fileManager_onSelectedFileOpened");
    // ...
)

<script>
    function fileManager_onSelectedFileOpened(e) {
        // your code
    }
</script>

onSelectionChanged

A function that is executed when a file system item is selected or selection is canceled.

Type:

Function parameters:

e:

Information about the event that caused the function's execution.

Object structure:

Name	Type	Description
component	FileManager	The UI component's instance.
currentDeselectedItemKeys	Array<String>	The keys of the file system items whose selection has been cleared.
currentSelectedItemKeys	Array<String>	The keys of the file system items that have been selected.
element	HTMLElement \| jQuery	The UI component's container. It is an HTML Element or a jQuery Element when you use jQuery.
model	any	Model data. Available only if you use Knockout.
selectedItemKeys	Array<String>	The keys of all selected file system items.
selectedItems	Array<FileSystemItem>	The currently selected file system items.

Default Value: null

jQuery

index.js

$(function() {
    $("#fileManagerContainer").dxFileManager({
        // ...
        onSelectionChanged: function(e) {
            // Your code goes here
        }
    });
});

Angular

app.component.html

app.component.ts

app.module.ts

<dx-file-manager ...
    (onSelectionChanged)="fileManager_onSelectionChanged($event)">
</dx-file-manager>

import { Component } from '@angular/core';

@Component({
    selector: 'app-root',
    templateUrl: './app.component.html',
    styleUrls: ['./app.component.css']
})
export class AppComponent {
    fileManager_onSelectionChanged(e) {
        // Your code goes here
    }
}

import { BrowserModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core';
import { AppComponent } from './app.component';

import { DxFileManagerModule } from 'devextreme-angular';

@NgModule({
    declarations: [
        AppComponent
    ],
    imports: [
        BrowserModule,
        DxFileManagerModule
    ],
    providers: [],
    bootstrap: [AppComponent]
})
export class AppModule { }

Vue

App.vue

<template>
    <DxFileManager ...
        :on-selection-changed="fileManager_onSelectionChanged"
    />
</template>

<script>
import 'devextreme/dist/css/dx.light.css';

import DxFileManager from 'devextreme-vue/file-manager';

export default {
    components: {
        DxFileManager
    },
    methods: {
        fileManager_onSelectionChanged(e) {
            // Your code goes here
        }
    }
}
</script>

React

App.js

import React from 'react';

import 'devextreme/dist/css/dx.light.css';

import FileManager from 'devextreme-react/file-manager';

class App extends React.Component {
    fileManager_onSelectionChanged(e) {
        // Your code goes here
    }

    render() {
        return (
            <FileManager ...
                onSelectionChanged={this.fileManager_onSelectionChanged}
            />
        );
    }
}
export default App;

ASP.NET MVC Controls

Razor C#

@(Html.DevExtreme().FileManager()
    .OnSelectionChanged("fileManager_onSelectionChanged");
    // ...
)

<script>
    function fileManager_onSelectionChanged(e) {
        // your code
    }
</script>

ASP.NET Core Controls

Razor C#

@(Html.DevExtreme().FileManager()
    .OnSelectionChanged("fileManager_onSelectionChanged");
    // ...
)

<script>
    function fileManager_onSelectionChanged(e) {
        // your code
    }
</script>

onToolbarItemClick

A function that is executed when a toolbar item is clicked.

Type:

Function parameters:

e:

Information about the event that caused the function's execution.

Object structure:

Name	Type	Description
component	FileManager	The UI component's instance.
element	HTMLElement \| jQuery	The UI component's container. It is an HTML Element or a jQuery Element when you use jQuery.
event	Event (jQuery or EventObject)	The event that caused the function to execute. It is an EventObject or a jQuery.Event when you use jQuery.
itemData	Object	The clicked item's data.
itemElement	HTMLElement \| jQuery	The item's container. It is an HTML Element or a jQuery Element when you use jQuery.
itemIndex	Number	The clicked item's index.
model	any	Model data. Available only if you use Knockout.

jQuery

JavaScript

$(function() {
    $("#fileManagerContainer").dxFileManager({
        // ...
        onToolbarItemClick: function(e) {
            // Your code goes here
        }
    });
});

Angular

app.component.html

app.component.ts

app.module.ts

<dx-file-manager ...
    (onToolbarItemClick)="fileManager_onToolbarItemClick($event)">
</dx-file-manager>

import { Component } from '@angular/core';

@Component({
    selector: 'app-root',
    templateUrl: './app.component.html',
    styleUrls: ['./app.component.css']
})
export class AppComponent {
    fileManager_onToolbarItemClick(e) {
        // Your code goes here
    }
}

import { BrowserModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core';
import { AppComponent } from './app.component';

import { DxFileManagerModule } from 'devextreme-angular';

@NgModule({
    declarations: [
        AppComponent
    ],
    imports: [
        BrowserModule,
        DxFileManagerModule
    ],
    providers: [],
    bootstrap: [AppComponent]
})
export class AppModule { }

Vue

App.vue

<template>
    <DxFileManager ...
        :on-toolbar-item-click="fileManager_onToolbarItemClick"
    />
</template>

<script>
import 'devextreme/dist/css/dx.light.css';

import DxFileManager from 'devextreme-vue/file-manager';

export default {
    components: {
        DxFileManager
    },
    methods: {
        fileManager_onToolbarItemClick(e) {
            // Your code goes here
        }
    }
}
</script>

React

App.js

import React from 'react';

import 'devextreme/dist/css/dx.light.css';

import FileManager from 'devextreme-react/file-manager';

class App extends React.Component {
    fileManager_onToolbarItemClick(e) {
        // Your code goes here
    }

    render() {
        return (
            <FileManager ...
                onToolbarItemClick={this.fileManager_onToolbarItemClick}
            />
        );
    }
}
export default App;

ASP.NET MVC Controls

Razor C#

@(Html.DevExtreme().FileManager()
    .onToolbarItemClick("fileManager_onToolbarItemClick");
    // ...
)

<script>
    function fileManager_onToolbarItemClick(e) {
        // your code
    }
</script>

ASP.NET Core Controls

Razor C#

@(Html.DevExtreme().FileManager()
    .onToolbarItemClick("fileManager_onToolbarItemClick");
    // ...
)

<script>
    function fileManager_onToolbarItemClick(e) {
        // your code
    }
</script>

permissions

Specifies actions that a user is allowed to perform on files and folders.

Type:

jQuery

JavaScript

$(function () {
    $("#file-manager").dxFileManager({
        permissions: {
            create: true,
            copy: true,
            move: true,
            remove: true,
            rename: true
        },
        // ...
    });
});

Angular

HTML

TypeScript

 
<dx-file-manager id="fileManager">
    <dxo-permissions 
        create="true"
        copy="true"
        move="true"
        delete="true"
        rename="true"
        upload="true"
        download="true">
    </dxo-permissions>    
    <!-- ... -->
</dx-file-manager>

import { DxFileManagerModule } from "devextreme-angular";
// ...
export class AppComponent {
    // ...
}
@NgModule({
    imports: [
        // ...
        DxFileManagerModule
    ],
    // ...
})

Vue

App.vue

<template>
    <DxFileManager>   
        <DxPermissions
            :create="true"
            :copy="true"
            :move="true"
            :delete="true"
            :rename="true"
            :upload="true"
            :download="true"
        />
    </DxFileManager>
</template>

<script>
import 'devextreme/dist/css/dx.light.css';

import { DxFileManager, DxPermissions } from 'devextreme-vue/file-manager';

export default {
    components: {
        DxFileManager,
        DxPermissions
    },
    data() {
        return {
            // ...
        }
    }
}
</script>

React

App.js

import React from 'react';
import FileManager, { Permissions } from 'devextreme-react/file-manager';

const App = () => {
    return (
        <FileManager>
            <Permissions
                create={true}
                copy={true}
                move={true}
                delete={true}
                rename={true}
                upload={true}
                download={true}>
            </Permissions>                
        </FileManager>
    );
};

export default App;

ASP.NET MVC Controls

Razor C#

@(Html.DevExtreme().FileManager()
    .Permissions(permissions => permissions
        .Create(true)
        .Copy(true)
        .Move(true)
        .Delete(true)
        .Rename(true)
        .Upload(true)
        .Download(true)
    )
    // ...
)

ASP.NET Core Controls

Razor C#

@(Html.DevExtreme().FileManager()
    .Permissions(permissions => permissions
        .Create(true)
        .Copy(true)
        .Move(true)
        .Delete(true)
        .Rename(true)
        .Upload(true)
        .Download(true)
    )
    // ...
)

rootFolderName

Specifies the root directory display name.

Type:

Default Value: 'Files'

jQuery

JavaScript

$(function () {
    $("#file-manager").dxFileManager({
        rootFolderName: "Custom Root Folder"
        // ...
    });
});

Angular

app.component.html

app.module.ts

<dx-file-manager 
    id="fileManager"
    rootFolderName="Custom Root Folder"
>
<!-- ... -->
</dx-file-manager>

import { BrowserModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core';
import { AppComponent } from './app.component';
import { DxFileManagerModule } from 'devextreme-angular';

@NgModule({
    declarations: [
        AppComponent
    ],
    imports: [
        BrowserModule,
        DxFileManagerModule
    ],
    //...
})
export class AppModule { }

Vue

App.vue

<template>
    <DxFileManager
        root-folder-name="Custom Root Folder"
    >   
    </DxFileManager>
</template>

<script>
    import 'devextreme/dist/css/dx.light.css';    

    import {
        DxFileManager
    } from 'devextreme-vue/file-manager';

    export default {
        components: {
            DxFileManager
        },
        data() {
            return {
                // ...
            };
        }            
    };
</script>

React

App.js

import React from 'react';

import 'devextreme/dist/css/dx.light.css';

import FileManager from 'devextreme-react/file-manager';

class App extends React.Component {
    render() {
        return (
            <FileManager 
                rootFolderName="Custom Root Folder" 
            >
            </FileManager>
        );
    }
}
export default App;

ASP.NET MVC Controls

Razor C#

@(Html.DevExtreme().FileManager()
    .RootFolderName("Custom Root Folder")
    // ...
)

ASP.NET Core Controls

Razor C#

@(Html.DevExtreme().FileManager()
    .RootFolderName("Custom Root Folder")
    // ...
)

rtlEnabled

Switches the UI component to a right-to-left representation.

Type:

DataGrid Demo Navigation UI Demo Editors Demo

Default Value: false

When this property is set to true, the UI component text flows from right to left, and the layout of elements is reversed. To switch the entire application/site to the right-to-left representation, assign true to the rtlEnabled field of the object passed to the DevExpress.config(config) method.

JavaScript

DevExpress.config({
    rtlEnabled: true
});

selectedItemKeys

Contains an array of initially or currently selected files and directories' keys.

Type:

Array<String>

Default Value: []

jQuery

JavaScript

$(function() {
    $("#fileManagerContainer").dxFileManager({
        // ...
        selectedItemKeys: ["item1_key", "item2_key", "item3_key"]
    });
});

Angular

app.component.html

app.module.ts

<dx-file-manager id="fileManager"
    [selectedItemKeys]="['item1_key', 'item2_key', 'item3_key']">
    <!-- ... -->
</dx-file-manager>

import { BrowserModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core';
import { AppComponent } from './app.component';
import { DxFileManagerModule } from 'devextreme-angular';

@NgModule({
    declarations: [
        AppComponent
    ],
    imports: [
        BrowserModule,
        DxFileManagerModule
    ],
    //...
})
export class AppModule { }

Vue

App.vue

<template>
    <DxFileManager
        :selected-item-keys="keys" >   
    </DxFileManager>
</template>
<script>
    import 'devextreme/dist/css/dx.light.css';    

    import {
        DxFileManager
    } from 'devextreme-vue/file-manager';

    export default {
        components: {
            DxFileManager
        },
        data() {
            return {
                keys: ['item1_key', 'item2_key', 'item3_key']
            };
        }            
    };
</script>

React

App.js

import React from 'react';

import 'devextreme/dist/css/dx.light.css';

import FileManager from 'devextreme-react/file-manager';

const keys = ['item1_key', 'item2_key', 'item3_key']

class App extends React.Component {
    render() {
        return (
            <FileManager selectedItemKeys={keys} >
            </FileManager>
        );
    }
}
export default App;

ASP.NET MVC Controls

Razor C#

@(Html.DevExtreme().FileManager()
    .SelectedItemKeys(new[] { "item1_key", "item2_key", "item3_key" })
    // ...
)

ASP.NET Core Controls

Razor C#

@(Html.DevExtreme().FileManager()
    .SelectedItemKeys(new[] { "item1_key", "item2_key", "item3_key" })
    // ...
)

selectionMode

Specifies whether a user can select a single or multiple files and folders in the item view simultaneously.

Type:

Default Value: 'multiple'

Accepted Values: 'multiple' | 'single'

NOTE

The check boxes that select/unselect individual items are displayed only in multiple selection mode.

jQuery

JavaScript

$(function () {
    $("#file-manager").dxFileManager({
        selectionMode: "single"
        // ...
    });
});

Angular

app.component.html

app.module.ts

<dx-file-manager id="fileManager"
    [selectionMode]="single">
    <!-- ... -->
</dx-file-manager>

import { BrowserModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core';
import { AppComponent } from './app.component';
import { DxFileManagerModule } from 'devextreme-angular';

@NgModule({
    declarations: [
        AppComponent
    ],
    imports: [
        BrowserModule,
        DxFileManagerModule
    ],
    //...
})
export class AppModule { }

Vue

App.vue

<template>
    <DxFileManager
        :selection-mode="single" >   
    </DxFileManager>
</template>
<script>
    import 'devextreme/dist/css/dx.light.css';    

    import {
        DxFileManager
    } from 'devextreme-vue/file-manager';

    export default {
        components: {
            DxFileManager
        },
        data() {
            return {
                // ...
            };
        }            
    };
</script>

React

App.js

import React from 'react';

import 'devextreme/dist/css/dx.light.css';

import FileManager from 'devextreme-react/file-manager';

class App extends React.Component {
    render() {
        return (
            <FileManager selectionMode={single} >
            </FileManager>
        );
    }
}
export default App;

ASP.NET MVC Controls

Razor C#

@(Html.DevExtreme().FileManager()
    .SelectionMode(FileManagerSelectionMode.Single)
    // ...
)

ASP.NET Core Controls

Razor C#

@(Html.DevExtreme().FileManager()
    .SelectionMode(FileManagerSelectionMode.Single)
    // ...
)

tabIndex

Specifies the number of the element when the Tab key is used for navigating.

Type:

Number

Default Value: 0

The value of this property will be passed to the tabindex attribute of the HTML element that underlies the UI component.

toolbar

Configures toolbar settings.

Type: dxFileManagerToolbar

DevExtreme File Manager - Toolbar

The FileManager UI component allows you to add default and custom toolbar items.

Predefined Items

Predefined toolbar items include:

'showNavPane' - Shows or hides the navigation panel.
'create' - Creates a new directory.
'upload' - Uploads a file.
'refresh' - Refreshes the file manager content and shows the progress panel.
'download' - Downloads a file.
'move' - Moves files and directories.
'copy' - Copies files and directories.
'rename' - Renames files and directories.
'delete' - Deletes files and directories.
'switchView' - Switches between the 'Details' and 'Thumbnails' file system representation modes.
'clearSelection' - Clears selection from files and directories in the Item View area.

To add a predefined item to the toolbar, specify its name and optional settings ('visible', 'location', 'locateInMenu', 'text', 'icon', 'disabled') and add the item to one of the following collections:

items - Displays toolbar items when no file system item is selected.
fileSelectionItems - Displays toolbar items when one or more file system items are selected.

NOTE

Note that optional settings for predefined toolbar items should be specified at the same level as the item's name property.

jQuery

JavaScript

$(function () {
    $("#file-manager").dxFileManager({
        toolbar: {
            items: [
                // Specifies a predefined item's name and optional settings
                {
                    name: "create",
                    text: "Create a directory",
                    icon: "newfolder"
                },
                // Specifies a predefined item's name only
                "switchView", "separator"
                //...
            ]
            fileSelectionItems: [
                "copy", "rename"
                //...
            ]
        }
    });
});

Angular

app.component.html

app.module.ts

<dx-file-manager>
    <dxo-toolbar>
        <!-- Specifies a predefined item's name and optional settings -->
        <dxi-item name="create" text="Create a directory" icon="newfolder"></dxi-item>
        <!-- Specifies a predefined item's name only -->
        <dxi-item name="switchView"></dxi-item>
        <dxi-item name="separator"></dxi-item>
        <!-- Specifies items that are visible when users select files -->
        <dxi-file-selection-item name="copy"></dxi-file-selection-item>
        <dxi-file-selection-item name="rename"></dxi-file-selection-item>
    </dxo-toolbar>
</dx-file-manager>

import { BrowserModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core';
import { AppComponent } from './app.component';
import { DxFileManagerModule } from 'devextreme-angular';

@NgModule({
    declarations: [
        AppComponent
    ],
    imports: [
        BrowserModule,
        DxFileManagerModule
    ],
    //...
})
export class AppModule { }

Vue

App.vue

<template>
    <DxFileManager>
        <DxToolbar>
            <!-- Specifies a predefined item's name and optional settings -->
            <DxItem name="create" text="Create a directory" icon="newfolder" />
            <!-- Specifies a predefined item's name only -->
            <DxItem name="switchView"/>
            <DxItem name="separator"/>
            <!-- Specifies items that are visible when users select files -->
            <DxFileSelectionItem name="copy"/>
            <DxFileSelectionItem name="rename"/>
        </DxToolbar>        
    </DxFileManager>
</template>
<script>
    import 'devextreme/dist/css/dx.light.css';    

    import {
        DxFileManager,
        DxToolbar,
        DxItem,
        DxFileSelectionItem
    } from 'devextreme-vue/file-manager';

    export default {
        components: {
            DxFileManager,
            DxToolbar,
            DxItem,
            DxFileSelectionItem
        },
        data() {
            return {
                //...
            };
        }            
    };
</script>

React

App.js

import React from 'react';

import 'devextreme/dist/css/dx.light.css';

import FileManager, { Toolbar, Item, FileSelectionItem } from 'devextreme-react/file-manager';

class App extends React.Component {
    render() {
        return (
            <FileManager>
                <Toolbar>
                    {/* Specifies a predefined item's name and optional settings */}
                    <Item name="create" text="Create a directory" icon="newfolder" />
                    {/* Specifies a predefined item's name only */}
                    <Item name="switchView" />
                    <Item name="separator" />
                    {/* Specifies items that are visible when users select files */}
                    <FileSelectionItem name="copy" />
                    <FileSelectionItem name="rename" />
                </Toolbar>
            </FileManager>
        );
    }
}
export default App;

ASP.NET Core Controls

Razor C#

@(Html.DevExtreme().Gantt()
    .Toolbar(toolbar => {
        toolbar.Items(items => {
            // Specifies a predefined item's name and optional settings
            items.Add().Name(FileManagerToolbarItem.Create).Text("Create a directory").Icon("newfolder");
            // Specifies a predefined item's name only
            items.Add().Name(FileManagerToolbarItem.SwitchView);
            items.Add().Name(FileManagerToolbarItem.Create);
        });
        // Specifies items that are visible when users select files 
        toolbar.FileSelectionItems(items => {
            items.Add().Name(FileManagerToolbarItem.Copy);
            items.Add().Name(FileManagerToolbarItem.Rename);
        });
    })
)

ASP.NET MVC Controls

Razor C#

@(Html.DevExtreme().Gantt()
    .Toolbar(toolbar => {
        toolbar.Items(items => {
            // Specifies a predefined item's name and optional settings
            items.Add().Name(FileManagerToolbarItem.Create).Text("Create a directory").Icon("newfolder");
            // Specifies a predefined item's name only
            items.Add().Name(FileManagerToolbarItem.SwitchView);
            items.Add().Name(FileManagerToolbarItem.Create);
        });
        // Specifies items that are visible when users select files 
        toolbar.FileSelectionItems(items => {
            items.Add().Name(FileManagerToolbarItem.Copy);
            items.Add().Name(FileManagerToolbarItem.Rename);
        });
    })
)

Custom Items

To add a custom toolbar item, specify its text and optional settings (for example, a file extension for the toolbar item that creates a new file) and add the item to one of the following collections:

items - Displays toolbar items when no file system item is selected.
fileSelectionItems - Displays toolbar items when one or more file system items are selected.

The widget property allows you to specify a UI component for a custom toolbar item (dxButton is the default UI component). Use the toolbarItemClick event to handle clicks on custom toolbar items.

jQuery

JavaScript

$(function () {
    $("#file-manager").dxFileManager({
        toolbar: {
            items: [
                // Specifies a custom item as a dxMenu UI component
                {
                    widget: "dxMenu",
                    options: {
                        items: [
                            {
                                text: "Create new file",
                                icon: "plus",
                                items: [
                                    {
                                        text: "Text Document",
                                        extension: ".txt"
                                    },
                                    {
                                        text: "RTF Document",
                                        extension: ".rtf"
                                    },
                                    {
                                        text: "Spreadsheet",
                                        extension: ".xls"
                                    }]
                            }
                        ],
                    }
            }]
        },
        onToolbarItemClick: onItemClick
    });
});
function onItemClick(args) {
    // ...
}

Angular

app.component.html

app.component.ts

app.module.ts

<dx-file-manager>
    <dxo-toolbar>
        <dxi-item widget="dxMenu" [options]="fileMenuOptions"></dxi-item>
    </dxo-toolbar>
</dx-file-manager>

import { Component } from '@angular/core';
import { Service } from './app.service';

@Component({
    selector: 'app-root',
    templateUrl: './app.component.html',
    styleUrls: ['./app.component.css'],
    providers: [Service]
})

export class AppComponent {
    constructor(service: Service) {
        this.fileMenuOptions = {
            items: [
                {
                    text: "Create new file",
                    icon: "plus",
                    items: [
                        {
                            text: "Text Document",
                            options: {
                                extension: ".txt",
                            }
                        },
                        {
                            text: "RTF Document",
                            options: {
                                extension: ".rtf",
                            }
                        },
                        {
                            text: "Spreadsheet",
                            options: {
                                extension: ".xls",
                            }
                        }
                    ]
                }
            ],
            onItemClick: () => {
                // ...
            }
        };
    }
}

import { BrowserModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core';
import { AppComponent } from './app.component';
import { DxFileManagerModule } from 'devextreme-angular';

@NgModule({
    imports: [
        BrowserModule,
        DxFileManagerModule
    ],        
    declarations: [AppComponent],
    bootstrap: [AppComponent]
})
export class AppModule { }

Vue

App.vue

<template>
    <DxFileManager>
        <DxToolbar>
            <DxItem
                widget="dxMenu"
                :options="fileMenuOptions"
            />
        </DxToolbar>        
    </DxFileManager>
</template>
<script>
    import 'devextreme/dist/css/dx.light.css';    

    import {
        DxFileManager,
        DxToolbar,
        DxItem
    } from 'devextreme-vue/file-manager';

    export default {
        components: {
            DxFileManager,
            DxToolbar,
            DxItem
        },
        data() {
            return {
                fileMenuOptions: {
                    items: [
                        {
                            text: "Create new file",
                            icon: "plus",
                            items: [
                                {
                                    text: "Text Document",
                                    options: {
                                        extension: ".txt",
                                    }
                                },
                                {
                                    text: "RTF Document",
                                    options: {
                                        extension: ".rtf",
                                    }
                                },
                                {
                                    text: "Spreadsheet",
                                    options: {
                                        extension: ".xls",
                                    }
                                }
                            ]
                        }
                    ],
                onItemClick: this.onItemClick
            };
        },
        methods:{
            onItemClick() {
                // ...
            }
        }
    };
</script>

React

App.js

import React from 'react';
import 'devextreme/dist/css/dx.light.css';
import FileManager, { Toolbar, Item } from 'devextreme-react/file-manager';    

const App = () => {
    const fileMenuOptions = {
        items: [
            {
                text: 'Create new file',
                icon: 'plus',
                items: [
                    {
                        text: 'Text Document',
                        extension: '.txt'
                    },
                    {
                        text: 'RTF Document',
                        extension: '.rtf'
                    },
                    {
                        text: 'Spreadsheet',
                        extension: '.xls'
                    }
                ]
            }
        ],
        onItemClick: 'onItemClick'
    };

    const onItemClick = (e) => {
        // ...
    };        

    return (
        <FileManager>
            <Toolbar>
                <Item widget="dxMenu" options={this.fileMenuOptions} />
            </Toolbar>
        </FileManager>
    );
};

export default App;

ASP.NET Core Controls

Razor C#

JavaScript

@(Html.DevExtreme().Gantt()
    .Toolbar(toolbar => {
        toolbar.Items(items => {
            items.Add()
                .Widget(widget => widget.Menu()
                    .Items(menuItems => {
                        menuItems.Add()
                            .Text("Create new file")
                            .Icon("plus")
                            .Items(subItems => {
                                subItems.Add()
                                    .Text("Text Document")
                                    .Option("extension", ".txt");
                                subItems.Add()
                                    .Text("RTF Document")
                                    .Option("extension", ".rtf");
                                subItems.Add()
                                    .Text("Spreadsheet")
                                    .Option("extension", ".xls");
                            });
                    })
                    .OnItemClick("onItemClick")
                );
        })
    })
)

<script type="text/javascript">
    function onItemClick() {
        // ...
    }
</script>

ASP.NET MVC Controls

Razor C#

JavaScript

@(Html.DevExtreme().Gantt()
    .Toolbar(toolbar => {
        toolbar.Items(items => {
            items.Add()
                .Widget(widget => widget.Menu()
                    .Items(menuItems => {
                        menuItems.Add()
                            .Text("Create new file")
                            .Icon("plus")
                            .Items(subItems => {
                                subItems.Add()
                                    .Text("Text Document")
                                    .Option("extension", ".txt");
                                subItems.Add()
                                    .Text("RTF Document")
                                    .Option("extension", ".rtf");
                                subItems.Add()
                                    .Text("Spreadsheet")
                                    .Option("extension", ".xls");
                            });
                    })
                    .OnItemClick("onItemClick")
                );
        })
    })
)

<script type="text/javascript">
    function onItemClick() {
        // ...
    }
</script>

upload

Configures upload settings.

Type:

jQuery

$(function () {
    $("#file-manager").dxFileManager({
        upload: {
            chunkSize: 500000,
            maxFileSize: 1000000
        },
        // ...
    });
});

Angular

app.component.html

app.module.ts

<dx-file-manager id="fileManager">
    <dxo-upload [chunkSize]="500000" [maxFileSize]="1000000" ></dxo-upload>
    <!-- ... -->
</dx-file-manager>

import { BrowserModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core';
import { AppComponent } from './app.component';
import { DxFileManagerModule } from 'devextreme-angular';

@NgModule({
    declarations: [
        AppComponent
    ],
    imports: [
        BrowserModule,
        DxFileManagerModule
    ],
    //...
})
export class AppModule { }

Vue

App.vue

<template>
    <DxFileManager>   
        <DxUpload 
            :chunk-size="500000"
            :max-file-size="1000000"
            />
    </DxFileManager>
</template>
<script>
    import 'devextreme/dist/css/dx.light.css';    

    import {
        DxFileManager,
        DxUpload
    } from 'devextreme-vue/file-manager';

    export default {
        components: {
            DxFileManager,
            DxUpload
        },
        data() {
            return {
                //...
            };
        }            
    };
</script>

React

App.js

import React from 'react';

import 'devextreme/dist/css/dx.light.css';

import FileManager, { Upload } from 'devextreme-react/file-manager';

class App extends React.Component {
    render() {
        return (
            <FileManager>
                <Upload 
                    chunkSize={500000} 
                    maxFileSize={1000000}
                />
            </FileManager>
        );
    }
}
export default App;

ASP.NET MVC Controls

Razor C#

@(Html.DevExtreme().FileManager()
    .Upload(up => up
        .ChunkSize(500000)
        .MaxFileSize(1000000)
    )
    // ...
)

ASP.NET Core Controls

Razor C#

@(Html.DevExtreme().FileManager()
    .Upload(up => up
        .ChunkSize(500000)
        .MaxFileSize(1000000)
    )
    // ...
)

visible

Specifies whether the UI component is visible.

Type: