/// <summary>
        /// This method is used to create and return an instance of the MapPointWebServiceHelper.  Need a MapPoint
        /// account?  Get a developer account here https://mappoint-css.partners.extranet.microsoft.com/MwsSignup/Eval.aspx
        /// </summary>
        /// <param name="userid">MapPoint userid</param>
        /// <param name="password">MapPoint password</param>
        /// <returns></returns>
        public static MapPointWebServiceHelper GetInstance(string userid, string password)
        {
            if (MapPointHelperInstance == null)
            {
                MapPointHelperInstance = new MapPointWebServiceHelper(userid, password);
            }

            return(MapPointHelperInstance);
        }
        /// <summary>
        /// This method is used to create and return an instance of the MapPointWebServiceHelper.  Need a MapPoint
        /// account?  Get a developer account here https://mappoint-css.partners.extranet.microsoft.com/MwsSignup/Eval.aspx
        /// </summary>
        /// <param name="userid">MapPoint userid</param>
        /// <param name="password">MapPoint password</param>
        /// <returns></returns>
        public static MapPointWebServiceHelper GetInstance(string userid, string password)
        {
            if (MapPointHelperInstance == null)
                     MapPointHelperInstance = new MapPointWebServiceHelper(userid, password);

            return MapPointHelperInstance;
        }