WPF Trigger binding to MVVM property

Question

I have a datatemplate containing an image that I want to be hidden if the the value of a property in a ViewModel is true. Can anyone tell me why the the xaml below does not

Answer 1

I just did something similar using a ContentControl.

From http://karlhulme.wordpress.com/2007/03/06/using-a-contentcontrol-and-datatemplate-to-indicate-new-andor-modified-data/