![]() ![]() You can now use your control as an ordinary TreeView control, with your alterations. Propert圜hanged( this, new Propert圜hangedEventArgs(aPropertyName)) Private void NotifyPropert圜hanged( String aPropertyName) Private void MyTreeView_SelectedItemChanged( Object sender, RoutedPropert圜hangedEventArgs e) Get īase.SelectedItemChanged += new RoutedPropert圜hangedEventHandler(MyTreeView_SelectedItemChanged) Public static readonly DependencyProperty SelectedItemsProperty = DependencyProperty.Register( " SelectedItem", typeof( Object), typeof(MyTreeView), new PropertyMetadata( null)) The SelectedItem property on the TreeView control is a read-only property and is set to an item when the IsSelected property value of the item TreeView is. The TreeView in WPF doesnt allow you to set the SelectedItem, saying that the property is ReadOnly. Public class MyTreeView : TreeView, INotifyPropert圜hanged This.Propert圜hanged( this, new Propert圜hangedEventArgs(propertyName)) Protected virtual void OnPropert圜hanged( string propertyName) Public event Propert圜hangedEventHandler Propert圜hanged Static virtual void OnSelectedItemChanged() ![]() You can use breakpoint then see those properties value and type in Visual Studio's watch. ![]() Also this should be moved to an instance property on a VM for the whole tree, otherwise there will be conflicts for more than one tree. Try this to get selected item: TreeViewItem item e.NewValue as TreeViewItem Or this to get previously selected item: TreeViewItem item e.OldValue as TreeViewItem e.Source and e.OriginalSource refer to the TreeView not the TreeViewItem selected. The item will only be selected, if I click on the border of the item. In Silverlight, you don't even have OneWayToSource, so binding two way to SelectedItem (which does exist in XAML, even if IntelliSense doesn't show it) causes binding errors. But if I use TextBoxes instead, the behaviour is lost. The problem with the TreeView is that the SelectedItem is a read-only property. This is the default behaviour, if I use a treeview with TextBlocks. It says it returns a System.Object which I assume is based on what you put in there. I would like to create a treeview, that behaves the following way: If I click on an item in the treeview, the item will be selected. As you can see in Figure 1, when the SelectionMode is set to Multiple you are able to select more than one item. This is public get-only here but you could implement a public setter which also selects the item. I'd try grabbing just the SelectedItem, toss that in to a variable and then try working with that. Private static object _selectedItem = null Public class TViewModel : INotifyPropert圜hanged ![]()
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