title: Why does RunWithElevatedPrivileges fail to execute?
body: <p>I'm trying to make a web part that greps user comments and stores it in custom list, I wrote this code to add a list to the site once the web part added to the page,</p>
  
  <pre><code>[Guid("c314a0e8-0210-4064-b79e-bfd3594c6083")]
  public class CommentWriteSpace : System.Web.UI.WebControls.WebParts.WebPart
  {
      SPSite site = null;
      SPWeb web = null;
  
      public CommentWriteSpace()
      {
          SPSecurity.CodeToRunElevated foo = new SPSecurity.CodeToRunElevated(doit);
  
          SPSecurity.RunWithElevatedPrivileges(foo);
          SPListCollection listCollection = web.Lists;
  
          Guid listGuid = listCollection.Add("Comments List", "A list of user comments", SPListTemplateType.GenericList);
          listCollection[listGuid].Fields.Add("User", SPFieldType.User, true);
          listCollection[listGuid].Fields.Add("Comment", SPFieldType.Text, true);
          listCollection[listGuid].OnQuickLaunch = true;
          listCollection[listGuid].Update();
          //this.Page.Request.Url.ToString()
      }
  
      public void doit()
      {
          site = SPContext.Current.Site;
          web = site.OpenWeb();
      }
  }
  </code></pre>
  
  <p>But the <code>RunWithElevatedPrivileges</code> method throw an exception, I guess it's a permission issue, the exception is the same as one appears when executing <code>site.OpenWeb();</code> method without elevating privileges.</p>
  
  <p>What could be the problem?</p>