Re: Can you cancel the click of a checkbox?

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Hi,

It looks like the CheckState change is being performed by the OnClick handler of the CheckBox. If you want, you can create a derived CheckBox class and override the OnClick method, provide a new cancellable event (something like CheckStateChanging) that you call from your OnClick method, and only call the base OnClick method if the event is not cancelled.

Best regards,

Rodger

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Byron wrote:
I want to be able to intercept the click of a checkbox to cancel a change in its checked state under certain conditions to prevent the execution of code attached to the CheckedChanged event. So when someone clicks on the checkbox I want to do some validation and on failure throw the click away, leaving the state of the checkbox unchanged.

I was looking for Cancel or Handled to manage it, but I can't find it. I suppose I could short-circuit the CheckedChanged event to flip the checked state back and skip the code, using a Boolean flag to skip the second call to CheckedChanged when I change the state back, but that's ugly.

Any suggestions would be appreciated. 
.

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