C# WinForm 中让panel 可以在WinForm 中移动

panelContent.MouseDown += Panel_MouseDown;
// 为Panel添加鼠标移动事件处理程序
panelContent.MouseMove += Panel_MouseMove;
// 为Panel添加鼠标释放事件处理程序
panelContent.MouseUp += Panel_MouseUp;
 
 
 
private Point _dragStartPoint; // 用于存储鼠标按下时的Panel位置
private void Panel_MouseDown(object sender, MouseEventArgs e)
{
    // 当鼠标按下时，记录鼠标位置与Panel位置的偏移量
    _dragStartPoint = new Point(e.X, e.Y);
}
 
private void Panel_MouseMove(object sender, MouseEventArgs e)
{
    // 如果鼠标左键被按下
    if (e.Button == MouseButtons.Left)
    {
        // 计算新的Panel位置
        Point newLocation = new Point(
            panelContent.Left + (e.X - _dragStartPoint.X),
            panelContent.Top + (e.Y - _dragStartPoint.Y)
        );
        // 设置Panel的新位置
        panelContent.Location = newLocation;
    }
}
 
private void Panel_MouseUp(object sender, MouseEventArgs e)
{
    // 当鼠标释放时，重置偏移量
    _dragStartPoint = Point.Empty;
}