Turn WPF binding errors into exceptions

This project is a reusable assembly that converts WPF binding errors into exceptions.

Feel free to include it in your own project.

Content

1. Class BindingException is the typed exception thrown when a binding error occurs
2. Static class BindingExceptionThrower is the one that throws BindingException.
3. Class BindingErrorListener adds a listener to PresentationTraceSources.DataBindingSource. It raises the event ErrorCatched whenever a binding error occurs.
4. Class ObservableTraceListener is internal; it's an override of System.Diagnostics.TraceListener and it raises the event TraceCatched whenever a trace is written.

See an example in project SampleWpfApplicationTests in this repository.

Class diagram

How to use it?

The simplest way is to use BindingExceptionThrower because it handles everything for you:

BindingExceptionThrower.Attach()

That's all.
Once you called Attach(), every WPF binding error will raise a BindingException. See an example in project SampleWpfApplication in this repository.

However, if you want to be aware of binding errors without throwing an exception, you can use BindingErrorListener and attach to the ErrorCatched event.

using( var listener = new BindingErrorListener()) { listener.ErrorCatched += msg => Console.WriteLine("Binding error: {0}", msg); // ...do what you want here... }