[Question] Invalid dictionnary key behavior

[brignolff]

Hi,
I was binding a dictionnary value to the visibility property of one of my controls and I found that when I provide a key that isn't in the dictionnary, there is no exception thrown and the control just show on the screen like if the binding never existed.

Is it supposed to work like that or is it a bug ?

Below are the parts of the code i use :
The binding function :

this.OneWayBind(ViewModel, vm => vm.GestionUtilisateurs.Utilisateur.Droits["non existing key"], view => view.lb_operateur.Visibility).DisposeWith(disposableRegistration);

The creation of the "Droits" dictionnary :

Droits = new Dictionary<string, bool>()
{
	{ "test", false },
};