static void UpdateObservedIsPresent(ButtonBase b)
{
if (b != null)
{
b.SetCurrentValue(IsPressedProperty, b.IsPressed);
}
}
static void Command_Changed(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
ButtonBase buttonBase = (ButtonBase)d;
if (e.OldValue != null && e.NewValue == null)
{
buttonBase.Click -= ExecuteCommand;
}
if (e.OldValue == null && e.NewValue != null)
{
buttonBase.Click += ExecuteCommand;
}
// Set IsEnabled value depending on CanExecute
if (buttonBase.Command != null)
{
buttonBase.SetCurrentValue(IsEnabledProperty, buttonBase.IsEnabled && buttonBase.Command.CanExecute(buttonBase.CommandParameter));
}
}