Hi Forum, I have an issue with Firefox1/2 and a Form Validation postback that includes a ModalPopup, pressing the Enter key bypasses the Modal Popup and posts data. (IE works correctly), Any ideas, cheers Paul 

 If you add UseSubmitBehavior="false" to all asp:button in your form (especially for any button in the modalpopup), the form won't submit by pressing the enter key.

Hi stmarti, thanks for your reply, I tried that but no go, firefox still posts form, not actioning a confirmation modal popup when pressing enter. The script/modal is working on all browsers if user uses submit button. This bug Ive found with firefox/mozilla

I used your suggestion this way:

<asp:Button ID="Button" runat="server" Text="Submit" OnClick="Button_OnClick" style="display:none" UseSubmitBehavior="false" />

Much appreciate some advice cheers P 

To solve this problem I used some JS, for anyone interested!!

function stopRKey(evt) {
var evt  = (evt) ? evt : ((event) ? event : null);
var node = (evt.target) ? evt.target : ((evt.srcElement) ? evt.srcElement : null);
if ((evt.keyCode == 13) && (node.type=="text")) { return false; }
}
document.onkeypress = stopRKey;

plkilroy:

<asp:Button ID="Button" runat="server" Text="Submit" OnClick="Button_OnClick" style="display:none" UseSubmitBehavior="false" />

It seems yout try to click the button by javascript, and also try to hide the button. 

But, I think this button not rendered and not part of the DOM at all, because of  style="display:none". This behavior is the standard behavior, so you have problem with firefox.

You can try instead:

<div style="display: none"> 

    <asp:Button ID="Button" runat="server" Text="Submit" OnClick="Button_OnClick" UseSubmitBehavior="false" />

</div> 

plkilroy:

To solve this problem I used some JS, for anyone interested!!

What happens when your user disable javascript?   (considered a malicious user)