/// <summary>
        /// 选择市事件
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void cmbCity_SelectionChanged(object sender, SelectionChangedEventArgs e)
        {
            if (!this.needChange)
            {
                return;
            }
            if (cmbCity.SelectedIndex > 0)
            {
                int citySysNumber = System.Convert.ToInt32(cmbCity.SelectedValue);
                this.SelectedCitySysNo = citySysNumber.ToString();

                Facade.QueryCurrentAreaStructure_Old(citySysNumber, (obj, args) =>
                {
                    if (args.FaultsHandle())
                    {
                        return;
                    }
                    this.needChange       = false;
                    ViewModel             = AreaQueryTransform.Transform_Old(args.Result);
                    cmbArea.ItemsSource   = ViewModel.DistrictAreaList;
                    this.SelectedCityName = ViewModel.CityeAreaList.Where(f => f.Key == citySysNumber.ToString()).FirstOrDefault().Value;
                    this.needChange       = true;
                    ClearValidationError(cmbArea);
                });
            }
            else
            {
                this.needChange       = false;
                cmbArea.ItemsSource   = SingleSource;
                cmbArea.SelectedIndex = 0;
                this.needChange       = true;
            }
        }
        /// <summary>
        /// 绑定数据
        /// </summary>
        private void BindData()
        {
            string query = string.IsNullOrEmpty(this.SelectedAreaSysNo) ? "-999" : this.SelectedAreaSysNo;

            //MessageBox.Show("第一步" + this.SelectedAreaSysNo ?? "");
            if (query == "-999" && GetParentObject <UserControl>(this, "ucContactInfo") != null)
            {
                return;
            }
            Facade.QueryCurrentAreaStructure_Old(System.Convert.ToInt32(query), (obj, args) =>
            {
                //MessageBox.Show("第二步" + this.SelectedAreaSysNo ?? "");
                if (args.FaultsHandle())
                {
                    return;
                }
                ViewModel = AreaQueryTransform.Transform_Old(args.Result);

                string areaSysNo = null;
                if (!string.IsNullOrEmpty(this.SelectedAreaSysNo))
                //if (ViewModel.CurrentArea.SysNo.HasValue)
                {
                    areaSysNo = this.SelectedAreaSysNo;
                    //areaSysNo = ViewModel.CurrentArea.SysNo.ToString();
                }

                this.needChange = false;

                cmbProvince.ItemsSource = ViewModel.ProvinceAreaList;
                cmbCity.ItemsSource     = ViewModel.CityeAreaList;
                //在给ComboBox的数据源赋值后,会触发SelectionChanged时间,导致SelectedAreaSysNo为null,所以需要把SelectedAreaSysNo先存起来
                cmbArea.ItemsSource = ViewModel.DistrictAreaList;
                //MessageBox.Show("第三步" + ViewModel.ProvinceAreaList.Count.ToString() + "," + ViewModel.CityeAreaList.Count.ToString() + "," + ViewModel.DistrictAreaList.Count.ToString());
                this.needChange = true;

                if (!string.IsNullOrEmpty(areaSysNo))
                {
                    //MessageBox.Show("第四步" + areaSysNo);
                    this.SelectedAreaSysNo = areaSysNo;
                }

                if (string.IsNullOrEmpty(this.SelectedAreaSysNo))
                {
                    cmbProvince.SelectedIndex = 0;
                }
                else
                {
                    this.needChange = false;

                    //MessageBox.Show("第五步" + ViewModel.CurrentArea.ProvinceSysNumber + "," + ViewModel.CurrentArea.CitySysNumber + "," + ViewModel.CurrentArea.SysNumber);
                    cmbProvince.SelectedValue = ViewModel.CurrentArea.ProvinceSysNumber;
                    cmbCity.SelectedValue     = ViewModel.CurrentArea.CitySysNumber;
                    if (ViewModel.CurrentArea.DistrictName != null)
                    {
                        cmbArea.SelectedValue = ViewModel.CurrentArea.SysNumber;
                    }
                    else
                    {
                        cmbArea.SelectedIndex = 0;
                    }


                    this.needChange = true;
                }
            });
        }