OK chaps, I did have to use a dependency property, and I had to get the Binding
XAML correct. I have this code and XAML
public static readonly DependencyProperty IsDirtyProperty =
DependencyProperty.Register("IsDirty", typeof(bool), typeof(SettingsWindow));
public bool IsDirty
{
get { return (bool)GetValue(IsDirtyProperty); }
set { SetValue(IsDirtyProperty, value); }
}
<Button x:Name="btnSettingsOK" IsEnabled="{Binding
ElementName=WinSettings,Path=IsDirty}" ... />
-or-
<Button x:Name=" btnSettingsOK " IsEnabled="{Binding IsDirty,
ElementName=WinSettings}" ... />
Both Binding statements work. I can’t decide which feels more natural. There is
no need to implement INotifyPropertyChanged as no one is listening to this
modal dialog window.
I printed off a WPF Binding Cheat Sheet
<http://www.nbdtech.com/Free/WpfBinding.pdf> .
Greg
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