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Username validation using Regular Expression in C#

Posted By:Amit Mehra       Posted Date: August 06, 2008    Points: 10    Category: Regular Expressions    URL: http://www.dotnetspark.com  

Below is the regular expression to validate UserName or User Id.

 ^[A-Za-z1-9]{3,30}$ // This will restrict user to enter only alphanumeric value with minimun of 3 character and maximun of 30 character.


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