Specify a Header for the Request

Use the uploadHeaders option to specify a header for the request.

jQuery
JavaScript
$(function() {
    $("#file-uploader").dxFileUploader({
        // 
        uploadHeaders: {
            YourHeaderName: "YourHeaderValue" 
        }
    });
});
Angular
app.component.html
app.component.ts
app.module.ts
<dx-file-uploader>
    <!-- ... -->
    [uploadHeaders]="{
        YourHeaderName: 'YourHeaderValue'
    }"        
</dx-file-uploader>
import { Component } from '@angular/core';

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

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

import { DxFileUploaderModule } from 'devextreme-angular';

@NgModule({
    declarations: [AppComponent],
    imports: [
        BrowserModule,
        DxFileUploaderModule
    ],
    providers: [ ],
    bootstrap: [AppComponent]
})
export class AppModule { }
Vue
App.vue
<template>
    <DxFileUploader>
        <!-- ... -->
        :upload-headers="headers"
    </DxFileUploader>
</template>

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

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

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

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

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

class App extends React.Component {
    headers = {
        YourHeaderName: 'YourHeaderValue'
    }

    render() {
        return (
            <FileUploader ...
                uploadHeaders={this.headers}>
            </FileUploader>
        );
    }
}
export default App;