Question

How do I get the username and the domain from an email address of:

string email = "[e-mail]";
//Should parse into:
string username = "hello";
string domain = "example.com";

I’m seeking the shortest code to do this, not necessarily efficient.

---

Scenario: I want to parse it in my ASP.NET MVC view so I can cloak it.

Answer 1

Use the MailAddress class

MailAddress addr = new MailAddress("[e-mail]");
string username = addr.User;
string domain = addr.Host;

This method has the benefit of also parsing situations like this (and others you may not be expecting):

MailAddress addr = new MailAddress("\"Mr. Hello\" <[e-mail]>");
string username = addr.User;
string host = addr.Host;

In both cases above:

Debug.Assert(username.Equals("hello"));
Debug.Assert(host.Equals("site.example"));

At the top of your file with the rest of your using directives add:

using System.Net.Mail;