Web Forms :: Trying To Validate On A Postback When A Button Is Clicked?
May 31, 2010
I have two text boxes txtBox_Input1 & txtBox_Input2 which Iam trying to validate on a postback when a button is clicked.here is the code:
[Code]....
The issue is that its causing an unhandled exception. When i debug by applying breaks and i check the validatorControl.ControlToValidate the IsValid property is false and then i try to cast the ControlTovalidate which is a string to a TEXTBOX and try change the border properties i get NullReferenceException, i.e. errortxtbox control is null at step '3->'. I check the validatorControl and I have all the attributes there but somehow its not casting the controlToValidate string as an appropriate texbox control to errortxtbox.
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