CODEWITHSUNDEEP
asp.netregex
rob
rob

Reputation: 53

What's wrong with my regular expression

I have a RegularExpressionValidator that validates a password field. The password must contain letters and at least 1 number and must be between 8 and 20 characters. Here's my validator:

<asp:RegularExpressionValidator ID="regexPassword" runat="server" ControlToValidate="txtNewPassword"
                ValidationExpression="^(?=.*[0-9])(?=.*[a-zA-Z])\w{8,20}$" ErrorMessage="Password must contain at least one digit and must be between 8 and 20 characters"
                Text="*" ValidationGroup="Passwords"></asp:RegularExpressionValidator>

This works great in my development environment and when I works on my local machine but it doesn't work when I migrate it to the production environment. In the production environment, I must start off with a digit for it to pass. Our production environment is running a Win 2k8 R2 machine but I can't imaging that that would matter. I found another post in here saying that this expression would work so I tested it and indeed it did work...but only in my dev environment. Can anyone see why, in my production environment, I have have to start off with a number for this to work? The number should be anywhere in the password.

Thanks

Upvotes: 0

Views: 117

Answers (1)

Patrick
Patrick

Reputation: 1827

Try this:

^(?=\w{8,20}$)(?=.*[0-9])(?=.*[a-zA-Z]).*

It relates to an IE6 bug, but it may still apply depending on the version of ASP.NET running on your production machine.

Upvotes: 1

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