How to bind an ItemsSource to a private property

Question

How to bind WPF an ItemsSource to a private property?

Answer 1

DataBinding in WPF works only with public properties.

MSDN:

The properties you use as binding source properties for a binding must be public properties of your class. Explicitly defined interface properties cannot be accessed for binding purposes, nor can protected, private, internal, or virtual properties that have no base implementation