public class Global
{
 /// <summary>
 /// Returns application virtual path without ending slash.
 /// </summary>
 public static string AppPath
 {
  get
  {
   string appPath = HttpContext.Current.Request.ApplicationPath;
   return (appPath == "/") ? string.Empty : appPath;
  }
 }
 /// <summary>
 /// Returns application host name including scheme and port if need, without
 /// ending slash.
 /// </summary>
 public static string AppServer
 {
  get
  {
   Uri uri = HttpContext.Current.Request.Url;
   string scheme = uri.Scheme;
   string host = uri.Host;
   string port = (uri.IsDefaultPort) ? string.Empty : ":" + uri.Port;
   return string.Format("{0}://{1}{2}", scheme, host, port);
  }
 }
 /// <summary>
 /// Returns full web-path for current request, without ending slash.
 /// </summary>
 public static string AppFullPath
 {
  get { return (AppServer + AppPath); }
 }
 public static string AppPhysPath
 {
  get { return HttpContext.Current.Request.PhysicalApplicationPath; }
 }
} - - -
the truth is out there