<UserControl.CommandBindings>
	<CommandBinding Command="New" Executed="CommandBinding_Executed" CanExecute="CommandBinding_CanExecute"/>
</UserControl.CommandBindings>
...
<Button x:Name="btnAdd" x:FieldModifier="public" ToolTip="Add record" Command="New" CommandParameter="{Binding}">
	<Image Source="/AcadLoadManager;component/Icons/bullet_sparkle.png" Width="16"/>
</Button>

private void CommandBinding_Executed(object sender, ExecutedRoutedEventArgs e) {
	ItemsControl control = (ItemsControl)sender;			
	String name = control.Name;
	switch (name) {
		case "bundleList": {
				ObservableCollection<BundleWrapper> collection = 
					(ObservableCollection<BundleWrapper>)control.DataContext;
				Bundle bundle = new Bundle();
				bundle.DirectoryNamePrefix = "Hello World";
				collection.Add(new BundleWrapper(bundle));
				e.Handled = true;
				break;
			}
		case "pluginNameList": {
			BundleWrapper collection = (BundleWrapper)control.DataContext;
				break;
			}
		default:
			break;
	}			
}

private void CommandBinding_CanExecute(object sender, CanExecuteRoutedEventArgs e) {
	e.CanExecute = null != DataContext;
}