title: The name 'Request' does not exist in the current context in a standalone class
body: <p>i try to use the following code to initialize an ApplicationManager</p>
  
  <pre><code>public static ApplicationUserManager UserManager
      {
  
          get
          {
              return _userManager ?? Request.GetOwinContext().GetUserManager&lt;ApplicationUserManager&gt;();
          }
          private set
          {
              _userManager = value;
          }
      }
  </code></pre>
  
  <p>but unfortunately i got an error says <code>The name 'Request' does not exist in the current context</code>
  ps: i'm initializing this ApplicationManager in a standalone class.</p>