JavaScript/jQuery FileManager File System Providers

File system providers are components that provide APIs used to access and modify virtual file systems. This section describes file system providers supported by the FileManager.

Custom

A custom file system provider allows you to implement custom APIs to access and use file systems.

import CustomFileSystemProvider from "devextreme/file_management/custom_provider"

Use the custom provider's methods to handle file operations (add, delete, rename, and so on).

The following code shows how to create a custom file system provider and bind the FileManager UI component to it:

jQuery
index.js
$(function () {
    $("#file-manager").dxFileManager({ 
        fileSystemProvider: new DevExpress.fileManagement.CustomFileSystemProvider({ 
            getItems: function(pathInfo) { 
                // Your code goes here
            }, 
            renameItem: function(item, name) { 
                // Your code goes here
            }, 
            createDirectory: function(parentDir, name) { 
                // Your code goes here
            }, 
            deleteItem: function(item) { 
                // Your code goes here
            }, 
            // ...
        }) 
    });
});
Angular
app.component.html
app.component.ts
app.module.ts
<dx-file-manager 
    [fileSystemProvider]="fileSystemProvider">
</dx-file-manager>
import { Component } from '@angular/core';
import CustomFileSystemProvider from 'devextreme/file_management/custom_provider'; 

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

export class AppComponent {
    fileSystemProvider: CustomFileSystemProvider;
    constructor(http: HttpClient) {
        this.fileSystemProvider = new CustomFileSystemProvider({
            getItems,
            createDirectory,
            renameItem,
            deleteItem,
            // ...
        });
    }
}

function getItems(parentDirectory) {
    // ...
}
// other functions
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
        :file-system-provider="fileSystemProvider">
    </DxFileManager>
</template>

<script>
import 'devextreme/dist/css/dx.light.css'; 
import { DxFileManager } from 'devextreme-vue/file-manager';
import CustomFileSystemProvider from 'devextreme/file_management/custom_provider';

export default {
    components: {
        DxFileManager
    },

    data() {
        return {
            fileSystemProvider: new CustomFileSystemProvider({
                getItems,
                createDirectory,
                renameItem,
                deleteItem,
                // ...
            }),
        };
    }
};

function getItems(parentDirectory) {
    // ...
}
// other functions

</script>
React
App.js
import React from 'react';
import 'devextreme/dist/css/dx.light.css';
import FileManager from 'devextreme-react/file-manager';
import CustomFileSystemProvider from 'devextreme/file_management/custom_provider';

class App extends React.Component {
    render() {
        constructor() {
            super();
            this.fileSystemProvider = new CustomFileSystemProvider({
                getItems,
                createDirectory,
                renameItem,
                deleteItem,
                // ...
            });
        }
        return (
            <FileManager 
                fileSystemProvider={fileSystemProvider}>
            </FileManager>
        );
    }
}
function getItems(parentDirectory) {
    // ...
}
// other functions

export default App;
ASP.NET MVC Controls
Razor C#
@(Html.DevExtreme().FileManager()
    .FileSystemProvider(provider => provider.Custom()
        .GetItems("getItems")
        .CreateDirectory("createDirectory")
        .RenameItem("renameItem")
        .DeleteItem("deleteItem")
        // ...
    )    
)

<script>
    function getItems(parentDirectory) {
        // ...
    }
    // other functions
</script>
ASP.NET Core Controls
Razor C#
@(Html.DevExtreme().FileManager()
    .FileSystemProvider(provider => provider.Custom()
        .GetItems("getItems")
        .CreateDirectory("createDirectory")
        .RenameItem("renameItem")
        .DeleteItem("deleteItem")
        // ...
    )    
)

<script>
    function getItems(parentDirectory) {
        // ...
    }
    // other functions
</script>

Object

The Object file system provider works with a file system represented by an in-memory array of JSON objects.

import ObjectFileSystemProvider from "devextreme/file_management/object_provider"

View Demo

Assign the array to the data property. Data object fields should have conventional names listed in the data description. Otherwise, specify [fieldName]Expr properties: nameExpr, sizeExpr, dateModifiedExpr, and so on.

The following code shows how to bind the FileManager to the 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]="fileItems">
</dx-file-manager>
import { Component } from '@angular/core';
import ObjectFileSystemProvider from 'devextreme/file_management/object_provider'; 

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

export class AppComponent {
    fileItems = [{
        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="fileItems">
    </DxFileManager>
</template>

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

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

export default {
    components: {
        DxFileManager
    },

    data() {
        return {
            fileItems
        };
    }
};
</script>
export const fileItems = [{
    '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 ObjectFileSystemProvider from 'devextreme/file_management/object_provider';

class App extends React.Component {
    render() {
        return (
            <FileManager fileSystemProvider={fileItems}>
            </FileManager>
        );
    }
}
export default App;
export const fileItems = [{
    '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="~/data/fileSystem.js"></script>
ASP.NET Core Controls
Razor C#
@(Html.DevExtreme().FileManager()
    .FileSystemProvider(new JS("fileSystem"))
)

<script src="~/data/fileSystem.js"></script>

Remote

The Remote file system provider works with a file system located on the server.

import RemoteFileSystemProvider from "devextreme/file_management/remote_provider"

View Demo

Set the endpointUrl property to specify the endpoint used to access and modify the file system.

The server should return data objects of the following structure:

{
    name: "MyFile.jpg",
    size: 1024,
    dateModified: "2019/05/08",
    thumbnail: "/thumbnails/images/jpeg.ico",
    isDirectory: true,
    hasSubDirectories: true
}

Fields in this structure have conventional names that you can change via [fieldName]Expr properties: nameExpr, sizeExpr, dateModifiedExpr, and so on.

The following code shows how to bind the FileManager to the Remote file system provider:

jQuery
index.js
$(function () {
    $("#file-manager").dxFileManager({            
        fileSystemProvider: new DevExpress.fileManagement.RemoteFileSystemProvider({
            endpointUrl: "https://js.devexpress.com/Demos/Mvc/api/file-manager-file-system-scripts"
        }),
        // ...
    });
});
Angular
app.component.html
app.component.ts
app.module.ts
<dx-file-manager id="fileManager"
    [fileSystemProvider]="remoteFileProvider">
    <!-- ... -->
</dx-file-manager>
import { Component } from '@angular/core';
import RemoteFileSystemProvider from 'devextreme/file_management/remote_provider';

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

export class AppComponent {
    remoteFileProvider: RemoteFileSystemProvider;

    constructor() {
        this.remoteFileProvider = new RemoteFileSystemProvider({
            endpointUrl: "https://js.devexpress.com/Demos/Mvc/api/file-manager-file-system-scripts"
        });
    }
}
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
        :file-system-provider="remoteFileProvider">
        <!-- ... -->
    </DxFileManager>
</template>

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

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

import RemoteFileSystemProvider from 'devextreme/file_management/remote_provider';

const remoteFileProvider = new RemoteFileSystemProvider({
    endpointUrl: 'https://js.devexpress.com/Demos/Mvc/api/file-manager-file-system-scripts'
});

export default {
    components: {
        DxFileManager
    },
    data() {
        return {
            remoteFileProvider
        };
    }
};
</script>
React
App.js
import React from 'react';

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

import FileManager from 'devextreme-react/file-manager';
import RemoteFileSystemProvider from 'devextreme/file_management/remote_provider';

const remoteFileProvider = new RemoteFileSystemProvider({
    endpointUrl: 'https://js.devexpress.com/Demos/Mvc/api/file-manager-file-system-scripts'
});

class App extends React.Component {
    render() {
        return (
            <FileManager 
                fileSystemProvider={remoteFileProvider}>
                {/* ... */}
            </FileManager>
        );
    }
}
export default App;
ASP.NET MVC Controls
Razor C#
@(Html.DevExtreme().FileManager()
    .FileSystemProvider(provider => provider.Remote()
        .Url(Url.RouteUrl("FileManagerDBProviderApi")))
)

<!--FileManagerDBProviderApiController-->
[Route("api/file-manager-file-system", Name = "FileManagementFileSystemApi")]
public object FileSystem(FileSystemCommand command, string arguments) {
    var config = new FileSystemConfiguration {
        Request = Request,
        FileSystemProvider = new PhysicalFileSystemProvider(_hostingEnvironment.ContentRootPath + "/wwwroot"),
        // ...
    };
    var processor = new FileSystemCommandProcessor(config);
    var result = processor.Execute(command, arguments);
    return result.GetClientCommandResult();
}
ASP.NET Core Controls
Razor C#
@(Html.DevExtreme().FileManager()
    .FileSystemProvider(provider => provider.Remote()
        .Url(Url.RouteUrl("FileManagerDBProviderApi")))
)

<!--FileManagerDBProviderApiController-->
[Route("api/file-manager-file-system", Name = "FileManagementFileSystemApi")]
public object FileSystem(FileSystemCommand command, string arguments) {
    var config = new FileSystemConfiguration {
        Request = Request,
        FileSystemProvider = new PhysicalFileSystemProvider(_hostingEnvironment.ContentRootPath + "/wwwroot"),
        // ...
    };
    var processor = new FileSystemCommandProcessor(config);
    var result = processor.Execute(command, arguments);
    return result.GetClientCommandResult();
}

On the server-side, you need to process file management requests. DevExtreme provides helpers for ASP.NET MVC and ASP.NET Core that do this. To view the server-side code, navigate to the FileManagerApiController.cs tab in the following demo:

View Demo View on GitHub