How can I block postback caused by an ASP.NET Button?

Question

How can I block postback caused by an ASP.NET Button (or, any other) server control?

I.e. I shall push a Button but no postback will occur.

Answer 1

do this

button.Attributes.Add("onclick", "return false;")

on page load.

Answer 2

you could use the

OnClientClick="return false;"

property of the button

Answer 3

<asp:button runat="server" ... OnClientClick="return false" />

Answer 4

You could use AJAX controls that do callbacks instead of postbacks for another possibility besides the Javascript "return false;" answer.

Answer 5

You can make the client side validation fail for the control's validation group. Depending on what you're trying to do, that might be a nicer solution.

You can piggyback on the JavaScript run for each postback as well, but showing you from the top of my head while typing on a mobile phone... maybe not. I'll update this post when I get home.