asp.net - i must add CausesValidation="False" to every ASP Button to work, why?

Question

Hello i have a Big ASP Page and i must set in every ASP Button this:

CausesValidation="False" 

to work. If don't it cant run a codebehind function.

can somebody explain to me why this is so?

Answer 1

It seems you are using Validation controls in your page. Your page must pass the validation before postback to server. Below is the functionality of CausesValidation property:

• The CausesValidation property specifies if a page is validated when a Button control is clicked.

• Page validation is performed when a button is clicked by default.

• This property is mostly used to prevent validation when a cancel or reset button is clicked.