What defines the bindings update order in WPF?

Question

Hi,

I have a piece of WPF/C# code that uses several Bindings:

1. A combobox is used to select an Account
2. The itemssource property of a second combobox is bound to the selected Account. This second combobox is used to select a Contact
3. The itemssource property of a grid is bound to the selected Account. This grid contains the selected Account Invoices.
4. The Contacts combobox parent DataContext is bound to the selected Invoice.
5. The SelectedItem of the Contacts combobox is bound to the InvoiceContact property of the Invoice in the datacontext.

However the bindings are not updated in the order I want them to be. When I select another Account, the ItemsSource property of the Contact combobox change first, then it obviously change the SelectedItem, which changes the InvoiceContact and THEN, the selected Invoice changes...

No need to tell that it messes up the Invoice that was selected.

How can I control the order used to update the Bindings?

Thanks

Alex

Answer 1

Are you implementing INotifyPropertyChanged interface in your classes? I think the order is not so important if you implement INotifyPropertyChanged normally

Answer 2

As I was about to write an answer (something with PropertyChanged...) I realized:
I don't have a clue on what you're trying.
So I painted your description...
I really don't know what your trying in steps 4 and 5. Maybe you could elaborate ?