React FileUploader - Overview

The FileUploader UI component enables an end user to upload files to the server. An end user can select files in the file explorer or drag and drop files on the page's FileUploader area.

View Demo

The following code adds the FileUploader to your page. Use the accept property to restrict the file types that can be uploaded to the server. This property is like the underlying <input> element's "accept" attribute and accepts the same values described here.

jQuery
index.html
index.js
<div id="fileUploaderContainer"></div>
$(function() {
    $("#fileUploaderContainer").dxFileUploader({
        // ...
        accept: "image/*"
    });
});
Angular
app.component.html
app.component.ts
<dx-file-uploader ...
    accept="image/*">
</dx-file-uploader>
import { DxFileUploaderModule } from "devextreme-angular";
// ...
export class AppComponent {
    // ...
}
@NgModule({
    imports: [
        // ...
        DxFileUploaderModule
    ],
    // ...
})
Vue
App.vue
<template>
    <DxFileUploader
        accept="image/*" >   
    </DxFileUploader>
</template>
<script>
    import 'devextreme/dist/css/dx.light.css';    

    import {
        DxFileUploader
    } from 'devextreme-vue/file-uploader';

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

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

import FileUploader from 'devextreme-react/file-uploader';

function App() {
    return (
        <FileUploader accept="image/*" >
        </FileUploader>
    );
}
export default App;

A user can upload only one file at a time. Set the multiple property to true to allow uploading several files at once.

jQuery
index.js
$(function() {
    $("#fileUploaderContainer").dxFileUploader({
        multiple: true
    });
});
Angular
app.component.html
app.component.ts
<dx-file-uploader ...
    [multiple]="true">
</dx-file-uploader>
import { DxFileUploaderModule } from "devextreme-angular";
// ...
export class AppComponent {
    // ...
}
@NgModule({
    imports: [
        // ...
        DxFileUploaderModule
    ],
    // ...
})
Vue
App.vue
<template>
    <DxFileUploader
        :multiple="true" >   
    </DxFileUploader>
</template>
<script>
    import 'devextreme/dist/css/dx.light.css';    

    import {
        DxFileUploader
    } from 'devextreme-vue/file-uploader';

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

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

import FileUploader from 'devextreme-react/file-uploader';

function App() {
    return (
        <FileUploader multiple={true} >
        </FileUploader>
    );
}
export default App;

If you need to access the selected files at runtime, get the value of the value property. The following command returns an array, whose members are each an instance implementing the File interface.

jQuery
index.js
const files = $("#fileUploaderContainer").dxFileUploader("option", "value");

With Angular, Vue, or React, use a different technique. Bind the value property of the FileUploader UI component to a component property. After that, you can access the file array within any method.

Angular
app.component.ts
app.component.html
import { DxFileUploaderModule } from "devextreme-angular";
// ...
export class AppComponent {
    // ...
    value: any[] = [];
    getSelectedFiles () {
        return this.value;
    }
}
@NgModule({
    imports: [
        // ...
        DxFileUploaderModule
    ],
    // ...
})
<dx-file-uploader ...
    [(value)]="value">
</dx-file-uploader>
Vue
App.vue
<template>
    <DxFileUploader ...
        @value-changed="e => value = e.value"
    />
    </div>
</template>

<script>
import { DxFileUploader } from 'devextreme-vue/file-uploader';

export default {
components: {
    DxFileUploader,
},
data() {
    return {
        value: []
    };
},
methods: {
    getSelectedFiles () {
        return this.value;
    }
},
};
</script>
React
App.js
import React, {useState} from 'react';
import FileUploader from 'devextreme-react/file-uploader';

function App() {
    const [value, setValue] = useState([]);
    const changeValue = (e) => {
        setValue(e.value);
    }
    const getSelectedFiles = () => {
        return value;
    }
    return (
        <FileUploader ...
            value={value}
            onValueChanged={changeValue}
        />
    );
}

export default App;

The FileUploader can operate in two different modes, each demanding a different client- and server-side configuration. See the Client-Side Settings article for more details.

See Also
jQuery
Angular
Vue
React