//<i:Interaction.Triggers>
        //               <i:EventTrigger EventName = "SelectionChanged" >
        //                   < i:InvokeCommandAction
        //                        Command = "{Binding DataContext.GetCityCommand,RelativeSource={RelativeSource Mode=FindAncestor,AncestorType=ComboBox}}"
        //                       CommandParameter="{Binding Path=SelectionBoxItem,RelativeSource={RelativeSource Mode=FindAncestor,AncestorType=ComboBox}}" />
        //               </i:EventTrigger>
        //           </i:Interaction.Triggers>

        private void GetEndRegion(ComboBoxModel p)
        {
            if (p == null)
            {
                return;
            }
            userInfoModel.Village = p.Name;
        }
        private void GetVillage(ComboBoxModel p)
        {
            VillageCB = null;
            if (p == null)
            {
                return;
            }
            userInfoModel.Street = p.Name;
            List <ComboBoxModel> data = new ApiImpl().GetVillageRegion(p.Id.ToString());

            if (data != null)
            {
                VillageCB = new ObservableCollection <ComboBoxModel>(data);
            }
        }
        private void GetContory(ComboBoxModel p)
        {
            ContoryCB = null;
            StreetCB  = null;
            VillageCB = null;
            if (p == null)
            {
                return;
            }
            userInfoModel.City = p.Name;
            List <ComboBoxModel> data = new ApiImpl().GetCountryRegion(p.Id.ToString());

            if (data != null)
            {
                ContoryCB = new ObservableCollection <ComboBoxModel>(data);
            }
        }