Скачать или смотреть Resolving the Challenge of Passing a Blazor Object Reference to a Telerik Chat Control

Discover how to effectively communicate between Blazor components and Telerik Chat controls. Learn step-by-step how to use JavaScript to call Blazor methods seamlessly.
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This video is based on the question https://stackoverflow.com/q/77985408/ asked by the user 'Joe Mayo' ( https://stackoverflow.com/u/1454879/ ) and on the answer https://stackoverflow.com/a/78017892/ provided by the user 'Joe Mayo' ( https://stackoverflow.com/u/1454879/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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Passing a Blazor Object Reference to a Telerik Chat Control: A Comprehensive Guide

In the world of Blazor and Telerik controls, developers often face challenges when trying to bridge the gap between C# components and JavaScript. One common issue is passing a Blazor object reference to a Telerik Chat control. This guide will guide you through the process, demonstrating how to set up the communication between these two technologies effectively.

Understanding the Problem

Imagine you're integrating Telerik's JavaScript-based Chat control within a Blazor application. While Telerik provides a variety of controls, they lack a native Blazor chat component. This means we need to establish a connection between the Blazor component and the Kendo jQuery Chat widget using JavaScript, allowing the Chat control to access and invoke specific instance methods from your Blazor component.

The Key Requirements

Invoke Instance Methods: Unlike static methods, we want to call instance methods from JavaScript.

Pass Object Reference: The JavaScript code must have access to the Blazor component instance.

Use Case Specifics: The implementation must align with the specific scenario of using the Telerik Chat control.

The Solution

Step 1: Prepare the JavaScript File

To start, we need to set up our JavaScript code that initializes the Kendo Chat widget. Here’s a straightforward approach using JavaScript and Kendo's API:

[[See Video to Reveal this Text or Code Snippet]]

Step 2: Integrate with the Blazor Component

Next, we need to ensure that our Blazor component correctly sets the object reference when it is rendered. Here's how to do it:

[[See Video to Reveal this Text or Code Snippet]]

Key Changes Explained

DotNetObjectReference: By calling DotNetObjectReference.Create(this), we create a reference to the current instance of the Blazor component.

Call to setDotnetInstance: Using an IJSObjectReference, we invoke our newly defined setDotnetInstance function within the JavaScript to set the dotnet variable.

JSInvokable Attribute: The AskAsync method is marked with the [JSInvokable] attribute, allowing it to be called from JavaScript code.

Conclusion

While integrating Blazor with Telerik controls may seem daunting, you can effectively pass references and call instance methods from JavaScript using the approach outlined above. Although the solution may lack a bit of elegance, it accomplishes the task of communication between Blazor components and Kendo UI seamlessly.

If you come up with better methods or optimizations in the future, feel free to update your implementation based on new learnings or best practices!

For more information about Blazor, Kendo UI controls, and integrating different technologies, stay tuned to our blog for future posts.