Silverlight 拖动客户端文件 到ListBox

  void MainPage_Loaded(object sender, RoutedEventArgs e)
        {
            listBox.AllowDrop = true;

            listBox.DragEnter += new DragEventHandler(listBox_DragEnter);
            listBox.DragLeave += new DragEventHandler(listBox_DragLeave);
            listBox.DragOver += new DragEventHandler(listBox_DragOver);
            listBox.Drop += new DragEventHandler(listBox_Drop);
        }

        void listBox_DragEnter(object sender, DragEventArgs e)
        {
            listBox.Items.Add("DragEnter");
        }

        void listBox_DragLeave(object sender, DragEventArgs e)
        {
            listBox.Items.Add("DragLeave");
        }

        void listBox_DragOver(object sender, DragEventArgs e)
        {
            // listBox.Items.Add("DragOver");
        }

        void listBox_Drop(object sender, DragEventArgs e)
        {
            listBox.Items.Add("Drop");

            if (e.Data == null)
                return;

            IDataObject dataObject = e.Data as IDataObject;
            FileInfo[] files = dataObject.GetData(DataFormats.FileDrop) as FileInfo[];

            foreach (FileInfo file in files)
            {
                if (file.Exists)
                    listBox.Items.Add("FileName: " + file.Name + " [FileSize: " + file.Length + "]");
                else
                    listBox.Items.Add("文件无效");
            }
        }