private void UpdateConfigFile()

        {

            var cfg = System.Web.Configuration.WebConfigurationManager.OpenWebConfiguration(Request.ApplicationPath);

            if (cfg.ConnectionStrings.ConnectionStrings["masterConnString"] == null)

            {

                var elCon = cfg.ConnectionStrings.ConnectionStrings["ElectricConnString"];

                cfg.ConnectionStrings.ConnectionStrings.Add(new ConnectionStringSettings { Name = "masterConnString", ProviderName = "System.Data.SqlClient", ConnectionString = elCon.ConnectionString.Replace("Electric", "master") });

                cfg.Save();

            }

        }