How to Handle Image Pasting with Data in Blazor Rich Text Editor?

When pasting images into a Rich Text Editor, it’s critical to include additional headers and custom form data in the image upload request. This article outlines how to manage those requirements using the BeforeImageUpload event in a Blazor component.

Step-by-Step Implementation

1. Define the Rich Text Editor Component: Use the SfRichTextEditor component in your Blazor application, specifying necessary properties and event handlers.

@using Syncfusion.Blazor.RichTextEditor

<SfRichTextEditor>
    <RichTextEditorEvents BeforeUploadImage="@OnBeforeImageUpload"></RichTextEditorEvents>
    <RichTextEditorImageSettings SaveUrl="@SaveURL" Path="@Path">
    </RichTextEditorImageSettings>
</SfRichTextEditor>

2. Configure Image Upload and Customize Requests: To effectively handle image uploads in the rich text editor, configure the backend endpoint and tailor the HTTP request as follows:

@code {
    // Specify the URL and path for image uploads
    private string SaveURL = "https://your-upload-endpoint.com/upload";
    private string Path = "images/";

    // Customize the HTTP request using the BeforeUploadImage event
    private void OnBeforeImageUpload(ImageUploadingEventArgs args)
    {
        // Add custom headers to the request
        args.CurrentRequest = new List<object> 
        { 
            new { Authorization = "Bearer YourToken" }
        };
        
        // Add custom form data
        args.CustomFormData = new List<object>
        {
            new { submitId = "RTE" },
            new { workgroupId = "2" }
        };
    }
}

Additional References

• Blazor Rich Text Editor Events - Syncfusion

By leveraging the BeforeImageUpload event in the Rich Text Editor component, you enhance your application’s image upload functionality, ensuring all necessary headers and data are included in the request. This approach is ideal for maintaining secure and customized interactions with your image storage backend

Conclusion
I hope you enjoyed learning about How to Handle Image Pasting with Data in Blazor Rich Text Editor.

You can refer to our Blazor Rich Text Editor feature tour page to know about its other groundbreaking feature representations and documentation, and how to quickly get started for configuration specifications. You can also explore our Blazor Rich Text Editor example to understand how to create and manipulate data.
​
For current customers, you can check out our components from the License and Downloads page. If you are new to Syncfusion®, you can try our 30-day free trial to check out our other controls.
​
If you have any queries or require clarifications, please let us know in the comments section below. You can also contact us through our support forums, Direct-Trac, or feedback portal. We are always happy to assist you!