C. ASP.NET.Can anyone help me by giving me the regular expression to validate this characters? Thank You removed white spaces[/edit]. Implement Password Policy using Regular Expressions and ASP.Net RegularExpression Validator Here Mudassar Ahmed Khan has give some examples of combination ofEncrypt and Decrypt Username or Password stored in database in ASP.Net using C and VB.Net Here Mudassar Ahmed NEERAJ SRIVASTAVA ASP.NET With C. Many time we want to save the username value with specify length of string so I am trying to solve this problem with regular expression validator because we need only this expression value DataAnnotations Validation Regular Expression MVC4. Regular expression in the model [RegularExpression(!search for name or lastnameDate and time Fields asp.net c [closed]. How to detect click on button which is created through zopiom script for chat in android webview. username:minlength(4). Rick. String must be at least 4 characters.Regular expressions use Make your string a literal by adding sign before the opening quote. Otherwise you would need to escape all the backslashes that the string contains.