How to prevent call back call when asp button clicked?

Question

I have this image asp button:

<asp:ImageButton ID="btnUploadCoordinates"  OnClientClick="return ConfirmUploadCoordinates(); " ImageUrl="../Images/cloud-upload.png"  Style="width: 30px; height: 30px;"  ValidationGroup="Clear" runat="server" OnClick="btnUploadCoordinates_Click" />

Is it possible to prevent postback call when I click on the element?

Answer 1

This

OnClientClick="return ConfirmUploadCoordinates();

should change to

 OnClientClick="return ConfirmUploadCoordinates(event);

and then in your Javascript code

function ConfirmUploadCoordinates(event) {
  event.stopPropagation();
  event.preventdefault();
  return false;
}

or whatever your ConfirmUploadCoordinates function needs to do...

HTH