title: Error CS0433 : ascx exists in two DLLs
body: <p>In my case I have in the root folder (/ of my project) a class Ten.class that I use in various .cs files.</p>
  
  <p>When I precompile my application I get no errors. When I call X.aspx call a browser 
  I get an error since the code for X.aspx.cs is contained in both App_Web_xqlu1c5t.dll and TenManager.dll (TenManager is the namespace).</p>
  
  <p>Compiler Error Message: </p>
  
  <blockquote>
    <p>CS0433: The type 'ASP.usercontrols_contenteditor_ascx' exists in both 'App_Web_xqlu1c5t.dll' and 'TenManager.dll'</p>
  </blockquote>
  
  <p>If I convert this web site into a web application and I select "Publish Site" all the code is compiled in TenManager.dll.</p>
  
  <p>How to solve it?</p>