title: User exists in aspnet_membership table but getUser still returns null
body: <p>In my database I have the table aspnet_membership. In the application I am implementing the forgot password functionality. When the user is using this functionality he obviously isn't logged in. So the user enters his e-mail address of which he can't remember the password and in my code I try to get the correct MembershipUser object by executing this line of code:</p>
  
  <pre><code>var user = Membership.GetUser(username);
  </code></pre>
  
  <p>While testing, I enter and existing e-mail address but the function GetUser still returns null. I am sure the e-mail address exists by checking the content of the table. I cannot figure out what the reason is why I still get the null value returned. Can anyone tell me why GetUser returns null in this scenario?</p>