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How do I get my javacript (onclientclick) to stop the postback of my ASP.NET page?

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1,226 Views
Last Modified: 2013-12-17
I have a javacript function associated with the OnClientClick of an ASP.Net button.  I also have the OnClick associated with a server-side function.  My OnClientClick code evaluates values on the page and returns true or false.  If I return false I don't want the page to postback. Even if I return false the page posts back.

Do I need to hand code the ASP.NET postback in the javacript and remove the OnClick of the ASP.NET button?
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Commented:
That was it!  Thanks for the quick response.
Hey, got a better example for you.  In this example, we have a Server side button that closes a dialog window.  It is Server side so we can control how it is streamed down but don't care about the server responding to the click, we just want to close the window.  

<asp:Button ID="btnCancel" runat="server" class="button" Text="Cancel" OnClientClick="javascript:window.close();return false;" />

See how the return false; is in the actual markup of the button.  This will prevent a post back.
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