title: C# Mime Types class
body: <p>I want to save a Mime Type in my code.
  Now I use to do this:</p>
  
  <pre><code>string mYMimeType = "text/plain";
  </code></pre>
  
  <p>Is there a way to save it in a (already existent) standard,dedicated class?
  Something like...</p>
  
  <pre><code>Http.MimeTypes myMimeType = Http.MimeTypes.TextPlain;
  </code></pre>