Question

Using Asp.net Webforms how can I validate that a checkbox has been checked. (I cannot do a postback) has to be in javascript (either custom – working with the existing validation controls for other fields. or using a .net validation control)

Thanks

Answer 1

You can use a CustomValidator control and specify an ClientValidationFunction javascript function.

Find more info here:
http://forums.aspfree.com/net-development-11/compare-validator-for-a-checkbox-121590.html

But if you’re only doing client-side validation, the whole CustomValidator implementation might be a bit useless. Just validate the checkbox with javascript on the form submit.