title: MVC controller global variable from query string
body: <p>Is it possible to work with a global variable that need to receive the data from a query string in MVC controller?</p>
  
  <pre><code>public string Layout = Request.QueryString["Layout"];
  </code></pre>
  
  <p>At the moment I am working with a Session variable - but i want to use a global variable so it will be available all over my controller functions.
  Thanks</p>