title: How to validate email in ASP.NET Web API 2.0?
body: <p>Please provide me regular expression to validate email id like below in web api method:</p>
  
  <pre><code>// GET: users/sample%40email.com
  [Route("users/{emailAddress:regex()}")] 
  public IHttpActionResult GetUser(string emailAddress)
  </code></pre>
  
  <p>Here i need regular expression which will validate email like sample%40email.com and will work in :regex() of web api route attribute.</p>