Return keypress not detected

Question

A strange issue is occuring in my application.

I have a user entry process with a series of steps, guided by msgs and a single splash form. The app checks that the user follows the required steps and stores data at the end of the process, during which keypresses (rtn or esc) are required at certain points. After completing the process once, the user may choose to repeat the steps followed.

On the first attempt all keypresses are detected and handled in the form keydown event. However, on the second pass, detection of the Return keypress ceases. All other key presses are caught and processed correctly, but Return does not even raise the keydown event.

Any ideas or suggestions gratefully recieved!

Rgds,

Stuart Kirk

akhil · Answer

when u press enter key and focus is on command button then click event will fire and not keypress of button

joseph · Answer

A not perfect but good solution might be to use PreviewKeyDown This will get the enter key press but isn't quite ASCII for digits.

Alan · Answer

Not really unless you're calling methods such as IsInputKey which could change the status of the return key. One thing you could try is to explicitly set the AcceptButton property to Nothing before each run just in case it's being changed indirectly by some other code.

Stuart Kirk · Answer

Hmmm still confused. Keypreview = true There is no modification of the acceptbutton in my code... Any ideas?

Alan · Answer

It sounds like the return key is going straight to a control on the form after the first pass. I take it that you've got the Form's KeyPreview property set to True to capture any key presses at form level to start with. Is it possible that you're changing the AcceptButton property at some later point?

Stuart Kirk · Answer

Following some further testing it seems this is a fault specifically with the enter key capture - assigning the functionality to other keys works successfully on multiple runs. How strange!