How to Add an onclick Event to a Custom Blazor Tag

Learn how to easily add an `onclick` event to your custom Blazor components with our step-by-step guide. Make your components interactive and responsive!
---

Visit these links for original content and any more details, such as alternate solutions, comments, revision history etc. For example, the original title of the Question was: How to add an onclick event to a custom blazor tag

If anything seems off to you, please feel free to write me at vlogize [AT] gmail [DOT] com.
---
How to Add an onclick Event to a Custom Blazor Tag

When working with Blazor, developers often create custom components to encapsulate functionality and make code cleaner. However, you might find yourself in a situation where you need to add interactivity to these components. A common requirement is to add an onclick event to your custom Blazor tag. In this guide, we will walk you through how to achieve this with a practical example using a custom DataRow component.

Understanding the Problem

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

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

The goal here is to add an onclick event to the DataRow component so that when it is clicked, it triggers an event in the parent component. This is a common pattern when developing applications that use reusable components.

Solution: Adding the onclick Event

To enhance our DataRow component by enabling it to handle click events, we need to follow a few steps. Here’s how to do it:

1. Define an EventCallback in Your Component

First, modify the DataRow component to include an EventCallback property:

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

Next, we need to update the code-behind to handle the click event:

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

Explanation of the Code

<div @onclick="OnClicked">: This binds the click event to a method OnClicked, which we'll call when the div is clicked.

EventCallback OnClick { get; set; }: This parameter allows the parent component to specify what should happen when the DataRow is clicked.

OnClicked Method: This method is invoked when the <div> is clicked, and it calls the InvokeAsync method on the OnClick callback, effectively sending the click event back to the parent.

2. Use Your Component in the Parent

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

How It Works

In the parent component, you assign the MyClickFun method to the OnClick parameter of the DataRow. This method will be called whenever the DataRow is clicked.

Conclusion

Adding an onclick event to a custom Blazor component enhances interactivity and user experience. By implementing an EventCallback, you allow the parent component to respond to events fired from the child component effortlessly. This not only makes your components more reusable but also keeps your code organized and maintainable.

Feel free to implement this pattern in your custom components to streamline your Blazor applications!