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Performing custom validation
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Performing custom validation
http://www.geekpedia.com/tutorial83_Performing-custom-validation.html
Demonstrates how to use custom validation on a form by checking to see if a string in a TextBox is not the same with a string from an array (or database), case in which it displays 'This name is already taken'.
ASP.NET > Tips and Tutorials
Oct 10, 2006
Andrei Pociu
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