拖动时我想复制面板，而不是移动面板

Question

我想将面板从一个tableLayoutPanel拖到另一个tableLayoutPanel。我也想要复制面板，而不是移动;也就是说，我希望将它们复制（从tableLayoutPanel1到tableLayoutPanel2），将项目保留在tableLayoutPanel1中。 我可以这样做吗？如果你能给我一个想法，它会很棒。谢谢

    public Form1()
    {
        InitializeComponent();
        panel1.AllowDrop = true;
        panel2.AllowDrop = true;
        panel3.AllowDrop = true;

        panel1.DragEnter += panel_DragEnter;
        panel2.DragEnter += panel_DragEnter;

        panel1.DragDrop += panel_DragDrop;
        panel2.DragDrop += panel_DragDrop;
    }

    private void panel3_MouseDown(object sender, MouseEventArgs e)
    {
        DoDragDrop(panel3, DragDropEffects.Copy);
    }
    private void panel3_MouseMove(object sender, MouseEventArgs e)
    {
        DoDragDrop(panel3, DragDropEffects.Copy);
    }
    private void panel_DragEnter(object sender, DragEventArgs e)
    {

        e.Effect = DragDropEffects.Copy;
    }
    private void panel_DragDrop(object sender, DragEventArgs e)
    {
        ((Panel)e. Data . GetData(typeof(Panel))).Parent = (Panel)sender;
    }

    private void Form1_Load(object sender, EventArgs e)
    {

    }
}

}

Answer 1

您需要在MouseDown处理程序中创建一个新面板，将其属性设置为原始属性，将其添加到表单并使用DoDragDrop与此新面板。