void IdentifyTask_Failed(object sender, TaskFailedEventArgs args)
        {
            // Identify via identify service fails, then switch to using query service.
            QueryItem queryItem = args.UserState as QueryItem;

            if (queryItem != null)
            {
                queryItem.UseQueryIdentify();

                Configuration config = queryItem.Configuration();
                IdentifyPoint(queryItem.ParcelMap, ref config, queryItem.ClickPoint);
            }
            else
            {
                MessageBox.Show((string)Application.Current.FindResource("strIdentifyServiceFailed") + ": " + args.Error);
            }
        }