<> "All" And servicesList.SelectedValue <> "All" And facilitiesList.SelectedValue <> "All" And paymentsList.SelectedValue= "All" And servicesList.SelectedValue <> "All" And facilitiesList.<e
我的WPF应用程序中有ComboBoxes,它通过使用SelectedValue和SelectedValuePath进行选择。有时,SelectedValue不是ItemsSource的一部分(因为数据库不一致)。= "3"; SelectedValue="{Binding SelectedValue, Mo