title: Could not load type "System.Web.HttpContext" from assembly "System.Web"
body: <p>System.TypeLoadException: Could not load type 'System.Web.HttpContext' from assembly 'System.Web, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'.</p>
  
  <pre><code>using System;
  using System.Collections;
  using System.Collections.Generic;
  using System.Web;
  using System.Xml.Linq;
  
  public class Example : 
  {
  XDocument doc = XDocument.Load(System.Web.HttpContext.Current.Server.MapPath("~/example.xml"));
  }
  </code></pre>