I have a binding that works. The GUI updates. 

<DataGridTextColumn Binding="{Binding Path=Value, 
                              NotifyOnTargetUpdated=True, 
                              NotifyOnSourceUpdated=True, 
                              Mode=OneWay}"/>

The binding source object implements INotifyPropertyChanged and the binding property is a normal clr property.

The Binding.TargetUpdated event fires, but not the Binding.SourceUpdated event.

For example, the following works

<EventTrigger RoutedEvent="Binding.TargetUpdated"> ...

but 

<EventTrigger RoutedEvent="Binding.SourceUpdated"> ...

does not.

It makes no difference if I create the binding in code or XAML, use EventTrigger in the Triggers collection or an EventSetter. As far as I can tell the event is just not firing.

Does anyone know how to make Binding.SourceUpdated fire?

c# wpf data-binding wpfdatagrid
Edit
Report