silverlight之RadTreeView实现拖拽

实现的是将RadTreeView中的Item拖拽到TextBox中。

前台代码如下：

<telerikNavigation:RadTreeView IsDragTooltipEnabled="False" Margin="5 0 0 5"
                    x:Name="RadTreeView1" Grid.Row="1" HorizontalAlignment="Left"
                    VerticalAlignment="Top" SelectionMode="Multiple" IsDragDropEnabled="True"  PreviewDragEnded="radTreeView_PreviewDragEnded">
                <telerikNavigation:RadTreeViewItem Header="Item1"
                        DefaultImageSrc="../Images/TreeView/Outlook/1PersonalFolders.png"
                        IsExpanded="True">
                    <telerikNavigation:RadTreeViewItem Header="Item2"
                            DefaultImageSrc="../Images/TreeView/Outlook/2DeletedItems.png" />
                    <telerikNavigation:RadTreeViewItem Header="Drafts"
                            DefaultImageSrc="../Images/TreeView/Outlook/3Drafts.png" />
                </telerikNavigation:RadTreeViewItem>
            </telerikNavigation:RadTreeView>
            <TextBox x:Name="TextBox_DropConsumer" Width="100" Height="30" Grid.Column="2" Grid.Row="1"  BorderThickness="3" Margin="0 10 0 0"
                    VerticalAlignment="Top" HorizontalAlignment="Left"
                    telerikDragDrop:RadDragAndDropManager.AllowDrop="True" />

后台代码：

 public partial class SilverlightControl1 : System.Windows.Controls.UserControl
    {
        public SilverlightControl1()
        {
            InitializeComponent();
            this.InitializeComponent();
            RadDragAndDropManager.AddDropQueryHandler(TextBox_DropConsumer, new EventHandler<DragDropQueryEventArgs>(this.TextBox_OnDropQuery));
            RadDragAndDropManager.AddDropInfoHandler(TextBox_DropConsumer, new EventHandler<DragDropEventArgs>(this.TextBox_OnDropInfo));
        }

        ObservableCollection<String> personList = new ObservableCollection<String>();       
        void TextBox_OnDropQuery(object sender, DragDropQueryEventArgs e)
        {
            e.QueryResult = true;
        }
        private void radTreeView_PreviewDragEnded(object sender, RadTreeViewDragEndedEventArgs e)
        {
            e.Handled = true;
        }

        void TextBox_OnDropInfo(object sender, DragDropEventArgs e)
        {
            if (e.Options.Status == DragStatus.DropComplete)
            {
                String q = ((e.Options.Payload as Collection<Object>)[0] as RadTreeViewItem).Header as String;
                this.TextBox_DropConsumer.Text = q;
                MessageBox.Show(q);
            }
        }
    }