Add own javascript to validation

Question

Hi, I don't know very much about c#. I am updating a page built by someone else and I want to add a script to a button web control. The form is using c#'s validation and when I look at the returned markup from opening the page, there already is an onclick event handler for the postback submission and validation. So how do I add my own as well? Thanks for your help

Answer 1

You can use the button's OnClientClick property to place custom clientside script. Documentation on it here.

Answer 2

Here is the official ASP.NET QuickStart Tutorial for ASP.NET Validation Controls. By the way if you're looking for your custom validation, check CustomValidator Control, specifically it's ClientValidationFunction property.