How to Bind to Property Which Resides in the App Xaml backend

Question

I have a Property in my App.xaml.cs called User that holds the User details. I have read here that you can\'t have a dependency property on the App

Answer 1

And to access it programatically in C# you can do this:

((App)Application.Current).YourMethod
((App)Application.Current).YourProperty

Answer 2

I have read here that you can't have a dependency property on the App class.

Indeed you can't, because Application doesn't inherit from DependencyObject. However, it's not necessary : only the target property of a binding needs to be a dependency property.

If you want to bind to a property of your App class, you can do it like that :

IsEnabled="{Binding Path=User, Source={x:Static Application.Current}}"

Answer 3

You can bind declaratively in Silverlight to Application.Current by using a custom converter.

See my blog post here