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(citySysNumber, (obj, args) =>
{
if (args.FaultsHandle())
{
return;
}
this.needChange = false;
ViewModel = AreaQueryTransform.Transform(args.Result);
//cmbArea.ItemsSource = ViewModel.DistrictAreaList;
this.SelectedCityName = ViewModel.CityeAreaList.Where(f => f.Key == citySysNumber.ToString()).FirstOrDefault().Value;
// this.SelectedCityName = ViewModel.CityeAreaList;
this.needChange = true;
//ClearValidationError(cmbArea);
});
}
else
{
this.needChange = false;
//cmbArea.ItemsSource = SingleSource;
//cmbArea.SelectedIndex = 0;
this.SelectedAreaSysNo = null;
this.needChange = true;
}
}
private void BindData()
{
string query = string.IsNullOrEmpty(this.SelectedAreaSysNo) ? "-999" : this.SelectedAreaSysNo;
Facade.QueryCurrentAreaStructure(System.Convert.ToInt32(query), (obj, args) =>
{
if (args.FaultsHandle())
{
return;
}
ViewModel = AreaQueryTransform.Transform(args.Result);
string areaSysNo = null;
if (!string.IsNullOrEmpty(this.SelectedAreaSysNo))
{
areaSysNo = this.SelectedAreaSysNo;
}
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;
this.needChange = true;
if (!string.IsNullOrEmpty(areaSysNo))
{
this.SelectedAreaSysNo = areaSysNo;
}
if (string.IsNullOrEmpty(this.SelectedAreaSysNo))
{
cmbProvince.SelectedIndex = 0;
}
else
{
this.needChange = false;
cmbProvince.SelectedValue = ViewModel.CurrentArea.ProvinceSysNumber;
cmbCity.SelectedValue = ViewModel.CurrentArea.CitySysNumber;
//cmbArea.SelectedValue = ViewModel.CurrentArea.SysNumber;
this.needChange = true;
}
});
}