<Grid><Grid.RowDefinitions><RowDefinition Height="5"/><RowDefinition Height="*"/><RowDefinition Height="5"/></Grid.RowDefinitions><Grid.ColumnDefinitions><ColumnDefinition Width="5"/><ColumnDefinition Width="50"/><ColumnDefinition Width="5"/><ColumnDefinition Width="*"/><ColumnDefinition Width="5"/></Grid.ColumnDefinitions><Grid Grid.Row="1" Grid.Column="1" Background="Black"/><GridSplitter Grid.Row="1" Grid.Column="2"ShowsPreview="True"HorizontalAlignment="Stretch" VerticalAlignment="Stretch"/><Grid Grid.Row="1" Grid.Column="3" Background="Gray"></Grid></Grid>

class ListData{public int Number{get;set;}public ListData(int nNum){Number = nNum;}}

List<ListData> _list = new List<ListData>();
AdornerLayer mAdornerLayer = null;
bool bIsDraging = false;public MainWindow(){InitializeComponent();for (int n = 0; n < 600; n++ ){this._list.Add(new ListData(n));}this.DataContext = _list;this.list.AllowDrop = true;this.list.QueryContinueDrag += delegate(object sender, QueryContinueDragEventArgs e){//_adornerLayer.Update();//this.list.Cursor = Cursors.Arrow;
                mAdornerLayer.Update();};}

<DataTemplate x:Key="dt_Rectangle"><Grid Margin="10" ><Rectangle Width="50"Height="50" Fill="LightBlue" RadiusX="3" RadiusY="3"  /><TextBlock Text="{Binding Path=Number}"Foreground="White"VerticalAlignment="Center"HorizontalAlignment="Center"/><Rectangle Width="50"Height="50"Fill="Transparent"PreviewMouseDown="Rectangle_PreviewMouseDown" PreviewMouseMove="Rectangle_PreviewMouseMove" PreviewMouseUp="Rectangle_PreviewMouseUp" /></Grid></DataTemplate>

<ListBox x:Name="list" Background="Transparent"ItemsSource="{Binding}"ScrollViewer.HorizontalScrollBarVisibility="Disabled"loc:ListBoxSelectionHelper.MultiSelect="True"                 loc:ListBoxSelectionHelper.PreviewDrag="True" PreviewDragEnter="list_PreviewDragEnter"><ListBox.ItemTemplate><DynamicResource ResourceKey="dt_Rectangle"/></ListBox.ItemTemplate><ListBox.ItemsPanel><ItemsPanelTemplate><WrapPanel/></ItemsPanelTemplate></ListBox.ItemsPanel></ListBox>

<!--拖拽预览--><Grid Width="100"Height="100"><Grid x:Name="gridAdorner" Visibility="Hidden"><Rectangle Width="50"Height="50"Fill="LightGray"/><TextBlock x:Name="textAdorner" Text="0"VerticalAlignment="Center"HorizontalAlignment="Center" Foreground="Red" FontSize="20"></TextBlock></Grid></Grid>

private void Rectangle_PreviewMouseDown(object sender, MouseButtonEventArgs e){var rectangle = (FrameworkElement)sender;var rectangleViewModel = (ListData)rectangle.DataContext;ListBoxItem lstitem = this.list.ItemContainerGenerator.ContainerFromItem(rectangleViewModel) as ListBoxItem;if (lstitem.IsSelected == true){bIsDraging = true;e.Handled = true;}else{bIsDraging = false;}}private void Rectangle_PreviewMouseMove(object sender, MouseEventArgs e){if(bIsDraging){if (Mouse.LeftButton == MouseButtonState.Pressed){if (this.list.SelectedItems.Count>0){//ListBoxItem lstitem = this.list.ItemContainerGenerator.ContainerFromItem(pr) as ListBoxItem;//更新数据//MAx 2013-10-23 16:19:44this.textAdorner.Text = this.list.SelectedItems.Count.ToString();this.gridAdorner.Visibility = Visibility.Visible;DragDropAdorner adorner = new DragDropAdorner(this.gridAdorner);mAdornerLayer = AdornerLayer.GetAdornerLayer(this.list); // Window class do not have AdornerLayer
                        mAdornerLayer.Add(adorner);this.list.Cursor = Cursors.Arrow;string[] files = new string[1];DragDrop.DoDragDrop(list, new DataObject(DataFormats.FileDrop, files), DragDropEffects.Copy | DragDropEffects.Move /* | DragDropEffects.Link */);//DataObject dataObject = new DataObject(files);//System.Windows.DragDrop.DoDragDrop(this.list, dataObject, DragDropEffects.Copy);
mAdornerLayer.Remove(adorner);mAdornerLayer = null;this.gridAdorner.Visibility = Visibility.Hidden;}}}}private void Rectangle_PreviewMouseUp(object sender, MouseButtonEventArgs e){bIsDraging = false;}