Invoking a Client-side JavaScript Function from the Server-side Code

.NET allows you to call a JavaScript function from the server-side code. For example, suppose you want to to display a message box to the user. This can be accomplished in two steps:

  1. Write a JavaScript function in the HTML view of the page inside the &ltHEAD&gt elements as shown below:
  2. In the code behind file of the .aspx page, add the following line of code in the page load function:
         private void Page_Load(object sender, System.EventArgs e)     {        Button1.Attributes.Add("OnClick", "ShowAlert();");     }

Now, compile the project and run it. Clicking the button on the page, you can see the message box displayed.

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