ASP.NET: Disable Submit Form on Enter Key

By default, ASP.NET submits a form when the enter key is pressed.  When more than one is present, the first submit button in the page is 'clicked'.  You can change the default button which is pressed when the user presses the Enter key by using the following attribute in the form

<form id="form1" runat="server" defaultbutton="btnDefaultButton" >

I used this technique in order to disable this behaviour by using a dummy button at the end of the screen and pointing the defaultbutton to this button.  The dummy button must be invisible and do nothing, so here's the code

At the top:

<form id="form1" runat="server" defaultbutton="btnDisableEnter" >

At the bottom:

<asp:Button ID="btnDisableEnter" runat="server" Text="" OnClientClick="return false;" style="display:none;"/>

It seems to do the job quite well till now.  Let me know if you have a better solution or if you found it useful