Get the Source value in ConvertBack() method for IValueConverter implementation in WPF binding

Question

I am binding a dependency property to textboxex in WPF. The property is a string that has some values separated by \'/\' (example: \"1/2/3/4\" ). I need to bind individual v

Answer 1

In most cases, you can safely make ConvertBack just throw NotImplementedException.

Indeed, you just haven't got enough information to recreate the source value from its part!

If you really need the back conversion (e.g., if you use two-direction binding), I would split the property into 3 strings in the view model (the class used in DataContext), and bind to them separately.