使用固定ComboxItem 无法通过 selectitem as object 来进行回去到 Content内的对香数据。那我只能这个样干：

 private void CBPaiweiLeixingSelect_Change(object sender, SelectionChangedEventArgs e){ ComboBox ThisBox = sender as ComboBox;List<EDaxiaosuixi> ListShuixiE;ComboBoxItem SelectItemTextBox = CBPaiweiType.SelectedItem as ComboBoxItem;string SelectItemstr = SelectItemTextBox.Content as string;if (SelectItemstr == "非吉祥牌位"){ListShuixiE = ThisPaiweilist.Where(x => x.PaiweiType != EPaiweiType.吉祥牌位).Select(x => x.DaxiaoSuixi).Distinct().ToList();//获取大小随喜 CBPaiweiGuige.ItemsSource = ListShuixiE;}else if (SelectItemstr == "吉祥牌位"){ListShuixiE = ThisPaiweilist.Where(x => x.PaiweiType == EPaiweiType.吉祥牌位).Select(x => x.DaxiaoSuixi).Distinct().ToList();//获取大小随喜 CBPaiweiGuige.ItemsSource = ListShuixiE;}}

使用这个方法：

 List<EDaxiaosuixi> ListShuixiE;ComboBoxItem SelectItemTextBox = CBPaiweiType.SelectedItem as ComboBoxItem;string SelectItemstr = SelectItemTextBox.Content as string;

SelectItemstr 就是要获取的便跟过来的数据。