disabling default button or enter key in asp.net c#

Question

I have a form where users scan in a barcode, the barcode reader automatically enters a carriage return in the value causing the form to submit since the browser chooses the

Answer 1

Set the TextBox to have the text mode property set to "multiline". Then the carriage return will be in the TextBox.

See also here for a note about what to do if you're using FireFox.