How to verify an email address using c# code?

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Validating an email Address in C#

I require the c# code for email address verification. I don't want to use validator control now. Anybody can help me with code using RegEx? thx in advance

Answer 1

Use a regex such as this:

@"^(([^<>()[\]\\.,;:\s@\""]+(\.[^<>()[\]\\.,;:\s@\""]+)*)|(\"".+\""))@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))$";

And there are tons of posts on StackOverflow already discussing the uses of regexes for validating email addresses.

Answer 2

Search on stackoverflow. there are hundreds of posts already on this topic.

Answer 3

The full C# code would be as follows:

public bool IsEmailValid(string Email) 
{
   Regex re = new Regex(@"\b[A-Z0-9._%+-]+@[A-Z0-9.-]+\.[A-Z]{2,6}\b");
   return re.IsMatch(Email);
}

My regex is a little simpler, but Tyler's would work as well.

Answer 4

This one's always worked for me when validating email addresses:

\[A-Z0-9._%-+]+@[A-Z0-9.-]+\.[A-Z]{2,6}\

Edited to reflect colinodell's recommendations

Answer 5

If you want precision, RegExes are not the way, since this is what would be required to check an e-mail address for validity keeping in mind the relevant RFC; as said here,

The grammar described in RFC 822 is surprisingly complex. Implementing validation with regular expressions somewhat pushes the limits of what it is sensible to do with regular expressions, although Perl copes well

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