Databinding to a method in WPF

Question

I am having trouble databinding a TextBox.Text property to a object\'s method. The idea is allowing the user to write in a TextBox a file name and then

Answer 1

Ok, seems like this a bug when running WPF 4.0, as can be seen in comments here.

Woops, I was a bit hasty .. the example works perfectly as long you compile it for the 3.5 framework (in VS 2010). But if you convert it to WPF 4.0 project the method WeightOnPlanet on ObjectDataProvider is nolonger invoked on odp2 when you edit the textbox. I have tried to find any new Attributes on either the Binding or the ObjectDataProvider – but nothing has worked out so far …

When compiling in 3.5, it works fine here.