title: RouteData.Values stays Empty
body: <p>My Code for the Route looks like this:</p>
  
  <pre><code> RouteTable.Routes.MapPageRoute("IDP", "Person/{IDP}", "~/Person.aspx")
  </code></pre>
  
  <p>And now i want to get the Data on a Form, normally it works like this:</p>
  
  <pre><code>int id = Convert.ToInt32(Page.RouteData.Values["IDP"]);
  </code></pre>
  
  <p>But everytime i try to get the Data from the Route e.g.: <code>http://PC-81/SkillDatenbank/Person/1</code>
  I get no Data from the Value (it is empty!)</p>
  
  <p>I am using ASP.Net 4.5 with Web Forms.
  Edit: I made an new Project and tested and it didnt work either
  What am i Doing wrong? in the Last Project it did work like this :(
  Can you help me?</p>