How to obtain screen size from xaml?

Question

I\'m using wpf on C# to design GUI, and I want to get screen size (The value of Width and Height) from xaml code.

I knew how to get them from C# code as

Answer 1

Say your parent container in the XAML is grid, name it as grdForm

In the code behind can get the dimensions as

double width=grdForm.ActualWidth

double height=grdForm.ActualHeight