Re: RegularExpression Validation for password in ASP.NET

On Apr 10, 3:24 pm, "bienwell" <bienw...@xxxxxxxxxxx> wrote:
Hi all,

Can any one help me to write a regular expression to validate the password
entered on the text field in ASP.NET. The rules for the password are:
1- There must be at least one number in the password.
2- There must be upper and lower case letters in the password.
3- Password must begin with an alphabetic character.
4- Password cannot contain illegal characters, such as =, <, >, ;, :, '
, " or comma (equal sign, greater sign, less than sign, semicolon, colon,
single quote, double quotes, comma).
5- Password must be between 8 and 25 characters.

I'm not good at writing the expression. Please help me out.

Thanks in advance.

RegularExpressions.Regex.IsMatch(lblYourPw, "(?!^[0-9]*$)(?!^[a-zA-Z]*
$)^([a-zA-Z0-9]{8,10})$"))

"Validates a strong password. It must be between 8 and 10 characters,
contain at least one digit and one alphabetic character, and must not
contain special characters" I think you're 90% of the way there (got
it from http://msdn2.microsoft.com/en-us/library/ms998267.aspx)
.

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