public void ExecSaveCommand(object param) { CustomerClient cc = new CustomerClient("ep2"); cc.ClientCredentials.UserName.UserName = "******"; cc.ClientCredentials.UserName.Password = "******"; //cc. = System.Net.CredentialCache.DefaultCredentials; var x = cc.GetOrderOfCustomer(1); //Customers.Where(s => s.ID == 1).FirstOrDefault().Name = param.ToString(); }