.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:
- Write a JavaScript function in the HTML view of the page inside the <HEAD></HEAD> elements as shown below:
<script language="javascript">
function ShowAlert()
{
alert('Invoking from the server side code.');
}
</script>
- 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.
