Merge pull request #6741 from syncfusion-content/982433-export-doc

 982436: Update UG Documentation for Secure Word Import and Export Header Support in Blazor

Author: saravanangn

blazor-toc.html

@@ -4167,6 +4167,7 @@
 			<li> <a href="/blazor/rich-text-editor/keyboard-support">Keyboard shortcuts</a></li>
 			<li> <a href="/blazor/rich-text-editor/accessibility">Accessibility</a></li>
 			<li> <a href="/blazor/rich-text-editor/webassembly-performance">WebAssembly Performance</a></li>
+			<li> <a href="/blazor/rich-text-editor/import-export">Import and Export</a></li>
 			<li> <a href="/blazor/rich-text-editor/miscellaneous">Miscellaneous</a></li>
 			<li> <a href="/blazor/rich-text-editor/events">Events</a></li>
 			<li>How To

blazor/rich-text-editor/import-export.md

@@ -421,3 +421,93 @@ public WordDocument GetDocument(string htmlText)
 {% endtabs %}
 
 N> [View Sample in GitHub](https://github.com/SyncfusionExamples/blazor-rich-text-editor-export-to-html).
+
+## Securely Export Word or PDF Documents with Authentication
+
+You can include custom data when exporting Word or PDF documents, such as authentication tokens or other parameters. Use the `OnExport` event with its `RequestHeader` and `CustomFormData` properties to send these values to the server. On the server side, the authentication token can be read from the request headers, and the custom data can be accessed from the request body, which contains the values sent via a POST request.
+
+The following example demonstrates how to pass authentication tokens and custom data during export:
+
+{% tabs %}
+{% highlight razor %}
+@using Syncfusion.Blazor.RichTextEditor
+<SfRichTextEditor>
+    <RichTextEditorEvents OnExport="@Export" />
+    <RichTextEditorToolbarSettings Items="@Items" />
+    <RichTextEditorExportPdf ServiceUrl="@exportPdfServiceUrl" />
+    <RichTextEditorExportWord ServiceUrl="@exportWordServiceUrl" />
+    Rich Text Editor
+</SfRichTextEditor>
+@code {
+    private string exportWordServiceUrl = "https://blazor.syncfusion.com/services/production/api/RichTextEditor/ExportToDocx";
+    private string exportPdfServiceUrl = "https://blazor.syncfusion.com/services/production/api/RichTextEditor/ExportToPdf";
+    private List<ToolbarItemModel> Items = new List<ToolbarItemModel>()
+    {
+        new ToolbarItemModel() { Command = ToolbarCommand.ExportPdf },
+        new ToolbarItemModel() { Command = ToolbarCommand.ExportWord },
+    };
+    private void Export(ExportingEventArgs args)
+    {
+        // Assign different authentication tokens depending on the export type (Pdf or Word)
+        var token = (args.ExportType == "Pdf" ? "Pdf Bearer token" : "Word Bearer token");
+        args.RequestHeader = new Dictionary<string, string>
+        {
+            { "Authorization", token }
+        };
+        args.CustomFormData = new Dictionary<string, string>
+        {
+            { "userId", "12345" }
+        };
+    }
+}
+{% endhighlight %}
+{% endtabs %}
+
+{% tabs %}
+{% highlight controller %}
+
+using System;
+using System.IO;
+using System.Net.Http.Headers;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.AspNetCore.Http;
+using System.Collections.Generic;
+using Microsoft.AspNetCore.Hosting;
+using Microsoft.AspNetCore.Http.Features;
+
+namespace ExportService.Controllers
+{
+    [ApiController]
+    public class ExportController : ControllerBase
+    {
+        private readonly IWebHostEnvironment hostingEnv;
+
+        public ExportController(IWebHostEnvironment env)
+        {
+            this.hostingEnv = env;
+        }
+        public class ExportParam
+        {
+            public string? Html { get; set; }
+            public object? FormData { get; set; }
+        }
+        [AcceptVerbs("Post")]
+        [EnableCors("AllowAllOrigins")]
+        [Route("api/RichTextEditor/ExportToPdf")]
+        public async Task<ActionResult> ExportToPdf([FromBody] ExportParam args)
+        {
+            // Fetch authentication token from request headers
+            var authorization = Request.Headers["Authorization"].ToString();
+            // Access custom form data from the request body
+            Console.WriteLine("Authorization: " + authorization);
+            Console.WriteLine("Form Data: " + args.FormData);
+            Console.WriteLine("HTML Content: " + args.Html);
+            // Your export logic here
+            // Validate token, process formData, generate PDF, etc.
+            return Ok();
+        }
+    }
+}
+
+{% endhighlight %}
+{% endtabs %}