CODEWITHSUNDEEP
c#.netregex
Andreas
Andreas

Reputation: 2366

Regex class and test in C# .Net

I've copied a RegEx that's working in Javascript. But when I run it in C# it returns false. I'm not sure if it's my code iteslf that's incorrect or if it is the RegEx. This is my code.

bool isValid = true;

string nameInput = "Andreas Johansson";
string emailInput = "[email protected]";
string passwordInput = "abcABC123";

string namePattern = @"^[A-z]+(-[A-z]+)*$";
string emailPattern = @"^([\w-\.]+@([\w-]+\.)+[\w-]{2,4})?$";
string passwordPattern = @"^(?=.*\d+)(?=.*[a-zA-Z])[0-9a-zA-Z!@#$%]{6,50}$";
Regex nameRegEx = new Regex(namePattern);
Regex emailRegEx = new Regex(emailPattern);
Regex passwordRegEx = new Regex(passwordPattern);

if (model.CreateFullName.Length < 3 || !nameRegEx.IsMatch(nameInput))
                    isValid = false;

if (model.CreateEmail.Length < 3 || !emailRegEx.IsMatch(emailInput))
                    isValid = false;

if (model.CreatePassword.Length < 3 || !passwordRegEx.IsMatch(passwordInput))
                    isValid = false;

Thankful for inputs!

Upvotes: 0

Views: 80

Answers (1)

Sina Iravanian
Sina Iravanian

Reputation: 16296

You should remove boundary slashes from pattern definitions. They are required for regex objects in javascript not .NET. e.g.:

string namePattern = @"^[A-z]+(-[A-z]+)*$";
string emailPattern = @"^([\w-\.]+@([\w-]+\.)+[\w-]{2,4})?$";
string passwordPattern = @"^(?=.*\d+)(?=.*[a-zA-Z])[0-9a-zA-Z!@#$%]{6,50}$";

UPDATE: you fixed them in your edit.

The name pattern still does not account for spaces in the input. Try following instead:

^[A-z]+([-\s][A-z]+)*$

Also note that [A-z] is not a correct pattern for matching alphabet letters. Use [A-Za-z] for matching ASCII alphabet letters, or \p{L} for matching any unicode letter.

The problem for [A-z] is that it matches these character too that reside after Z and before a:

[\]^_`

Upvotes: 2

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