C#拖放实现餐饮系统转台操作

      转台是餐饮系统中常用的操作，一般系统都是右键选择弹出目标台界面，然后选择目标台确定，现在我们把需要转的台通过拖动到目标台图标上面就可以实现前面的操作，简单快捷。

转台操作时：

转台成功后：

/// <summary>
        /// 当拖动某项时触发
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void listView1_ItemDrag(object sender, ItemDragEventArgs e)
        {
            listView1.DoDragDrop(e.Item, DragDropEffects.Move);
        }

        /// <summary>
        /// 鼠标拖动某项至该控件的区域
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void listView1_DragEnter(object sender, DragEventArgs e)
        {
            e.Effect = DragDropEffects.Move;
        }

        /// <summary>
        /// 拖动时拖着某项置于某行上方时
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void listView1_DragOver(object sender, DragEventArgs e)
        {
            Point ptScreen = new Point(e.X, e.Y);
            Point pt = listView1.PointToClient(ptScreen);
            ListViewItem item = listView1.GetItemAt(pt.X, pt.Y);
            if (item != null)
                item.Selected = true;
        }

        /// <summary>
        /// 结束拖动
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void listView1_DragDrop(object sender, DragEventArgs e)
        {
            ListViewItem draggedItem = (ListViewItem)e.Data.GetData(typeof(ListViewItem));//旧目标
            Point ptScreen = new Point(e.X, e.Y);
            Point pt = listView1.PointToClient(ptScreen);
            ListViewItem TargetItem = listView1.GetItemAt(pt.X, pt.Y);//新目标   
            if (null == TargetItem)
            {
                return;
            }
            if (MessageBoxEx.Show("[" + draggedItem.Text + "]转至[" + TargetItem.Text + "]", "询问", 
                MessageBoxButtons.OKCancel, MessageBoxIcon.Question) == DialogResult.OK)
            {
                var item = draggedItem.Tag as View_TableListModel;
                int tableid = item.ID;
                
            }
            //listView1.Items.Insert(TargetItem.Index, (ListViewItem)draggedItem.Clone());
            //listView1.Items.Remove(draggedItem);
        }