public override void OnApplyTemplate()
{
base.OnApplyTemplate();
_listBox = (ListBox)GetTemplateChild("ListItems");
if (ItemsSource != null)
{
_collectionView = CollectionViewSource.GetDefaultView(ItemsSource);
_collectionView.Filter = CustomerFilter;
}
_pupListBox = (Popup)GetTemplateChild("pupListBox");
_listBox.ItemsSource = _collectionView;
_listBox.DisplayMemberPath = _viewElement;
//_listBox.SelectionChanged += ListBox_SelectionChanged;
_listBox.GotFocus += ListBox_GotFocus;
_listBox.LostFocus += ListBox_LostFocus;
_listBox.ItemContainerGenerator.StatusChanged += ItemContainerGenerator_StatusChanged;
_searchBox = (TextBox)GetTemplateChild("SearchBox");
_searchBox.TextChanged += SearchBox_TextChanged;
_searchBox.GotFocus += SearchBox_GotFocus;
_searchBox.LostFocus += SearchBox_LostFocus;
_pupListBox.Loaded += PupListBox_Loaded;
_pupListBox.KeyUp += PupListBox_KeyUp;
_pupListBox.KeyDown += PupListBox_KeyDown;
_pupListBox.Opened += PupListBox_Opened;
_searchBox.KeyDown += SearchtBox_KeyDown;
EventManager.RegisterClassHandler(typeof(ListBoxItem), ListBoxItem.MouseLeftButtonDownEvent, new RoutedEventHandler(this.MouseLeftButtonDownClassHandler));
if (GroupNames != null && GroupNames.Count() > 0)
{
GroupNames.ToList().ForEach(
x =>
_collectionView.GroupDescriptions.Add(new PropertyGroupDescription(x)));
}
UpdateStates(false);
}