my code id:

public void ShowEditor()
  {
   CuteEditor.Editor Editor1 = new CuteEditor.Editor();
   Editor1.ID = "Editor1";
            System.Text.StringBuilder sb = new System.Text.StringBuilder();
   System.IO.StringWriter sw = new System.IO.StringWriter(sb);
   HtmlTextWriter htw = new HtmlTextWriter(sw);
   Editor1.RenderControl(htw);
   string str = sb.ToString();
   Response.Write(str);
  }

when run,a error in Editor1.RenderControl(htw);mean:nullreferenceexception.

please tell me the right code!

thank very much!