CODEWITHSUNDEEP
c#
Lasse Edsvik
Lasse Edsvik

Reputation: 9298

format string email to email-link

I have a nullable-string email, and I would like to format the string as a mailto-link if it seems valid.

like this:

<a href="mailto:[email protected]">[email protected]</a>

How is that done?

/M

Upvotes: 1

Views: 2985

Answers (3)

jac
jac

Reputation: 9726

public string emailLink(string emailAddress)
{
    Regex emailRegex = new Regex(@"^(?!.*\.\.)[a-zA-Z0-9\w\._%&!'*=?^+-]*@[a-zA-Z0-9][\w\.-]*[a-zA-Z0-9]*\.[a-zA-Z][a-zA-Z\.]*[a-zA-Z]$";

    if (emailRegex.IsMatch(emailAddress)
    {
        return string.Format("<a href=\"mailto:{0}\">{0}</a>", emailAddress);
    }
    return "";
}

Upvotes: 5

viraptor
viraptor

Reputation: 34195

string formatIfValid(string email) {
   if(!validEmail(email))
      return null;
   return "<a href=\"mailto:" + email + "\">" + email + "</a>";
}

Or did you ask about something else really?

Upvotes: 3

John Weldon
John Weldon

Reputation: 40789

   var link = IsValid(email) 
        ? string.Format("<a href='mailto:{0}'>{0}</a>", email) 
        : email

where function IsValid is implemented in whichever way meets your needs.

Upvotes: 3

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