title: .Net: Reference System.Web.UI in Class Library Project
body: <p><a href="http://ryanfarley.com/blog/archive/2004/12/21/1325.aspx" rel="nofollow noreferrer">SetFocus</a></p>
  
  <p>I'm trying implement the above Se Focus code in a Class Library that i have. The class that I'm going to implement in is call HtmlHelper class but I can't seem to reference the System.Web.UI class in the Class Library project.</p>
  
  <p>How do you reference the System.Web.UI in Class library project?</p>