Multibinding not working on TextBox.Text
问题 I have a MultiBinding that is not working on TextBox.Text. I have the same code that is binding properly to Value of Extended WPF Toolkit's IntegerUpDown. It is going through an IMultiValueConverter that takes the bound POCO and the listbox it is part of (it is displaying the order of the item in the listbox) Here is the code: <!--works--> <wpf:IntegerUpDown ValueChanged="orderChanged" x:Name="tripOrder"> <wpf:IntegerUpDown.Value> <MultiBinding Converter="{StaticResource listBoxIndexConverter