在C＃中的ListBox之间拖放

Question

ListViews有itemDrag但ListBoxes错过了那个事件所以......我怎样才能实现相同的功能？

更新

在ListBoxes和ListView之间做同样的事情，我发现它几乎是一样的：

• MouseDown / ItemDrag - ＆gt;调用DoDragDrop（）以启用拖放事件

• DragEnter - ＆gt;放置效果的地方（移动，复制，无，......）

• DragDrop - ＆gt;在这里我移动/复制元素

Answer 1

感谢您的评论（简答），最后我可以实现我的目标

    // (from,to) ListBox 
    private void moveItems(ListBox lbA, ListBox lbB)
    {
        lbB.Items.Add(selected);
        lbA.Items.RemoveAt(index);
    }


    // (from,to) ListBox 
    private void moveItemsByName(string lbName1, string lbName2)
    {
        ListBox lb1 = Controls[Controls.IndexOfKey(lbName1)] as ListBox;
        ListBox lb2 = Controls[Controls.IndexOfKey(lbName2)] as ListBox;

        if (lb1.SelectedItem != null)
        {
            selected = lb1.SelectedItem.ToString();
            index = lb1.SelectedIndex;
            moveItems(lb1, lb2);                
        }
    }


    #region DoubleClick
    /*         
     *  Send items by DoubleClick
     */
    private void listBox_DoubleClick(object sender, EventArgs e)
    {
        ListBox lb_sender = sender as ListBox;
        moveItemsByName(lb_sender.Name, (lb_sender.Name == "listBox1" ? "listBox2" : "listBox1"));
    }
    #endregion

    #region Drag-and-drop
    /*
     *  Send items dragging them
     */
    private void listBox_MouseDown(object sender, MouseEventArgs e)
    {
        if (e.Clicks > 1)
            return;

        ListBox lb_sender = sender as ListBox;

        if (lb_sender.SelectedItem != null)
        {
            selected = lb_sender.SelectedItem;
            index = lb_sender.SelectedIndex;
            control = lb_sender.Name;
            DoDragDrop(selected.ToString(), DragDropEffects.Move);
        }
        else
            index = -1;
    }

    private void listBox_DragEnter(object sender, DragEventArgs e)
    { e.Effect = DragDropEffects.Move; }

    private void listBox1_DragDrop(object sender, EventArgs e)
    {   
        if (control == "listBox2" && index != -1)
        {
            moveItems(listBox2, listBox1);
        } 
    }

    private void listBox2_DragDrop(object sender, EventArgs e)
    {
        if (control == "listBox1" && index != -1)
        {
            moveItems(listBox1, listBox2);
        } 
    }
    #endregion        

    #region forward / backward arrows
    /*
     *  Send items by clicking arrows
     */
    private void lbArrow_Click(object sender, EventArgs e)
    {
        if (sender.Equals(lbArrowForward))
            moveItemsByName("listBox1", "listBox2");
        else
            moveItemsByName("listBox2", "listBox1");
    }
    #endregion

}