Flowlayoutpanel用鼠标滚动许多控件

问题描述

我有一个用用户控件填充的列表（〜300个用户控件//每个UC都有一个PictureBox和10个标签）。我将它们全部显示在Flowlayoutpanel中，但是当我向下或向上滚动时，它非常慢并且有点无响应。我已经在使用DoubleBuffered Flowlayoutpanel和SuspendLayout和ResumeLayout的“技巧”。我想做的是：我用鼠标向下滚动->当前两个用户控件不在视图中时，将它们删除->从底部的列表中添加两个新的用户控件。这也应该以相反的方式起作用：用鼠标向上滚动->当视图中不再有最后两个时，将其删除->从顶部的列表中添加两个新的用户控件。 Picture

我检查并尝试了发现的所有内容，但均无法正常工作... 我检查了一些链接：

• Fake-scrolling containers with very many controls
• https://social.msdn.microsoft.com/Forums/en-US/bc881e4d-6770-44f0-85ce-51456920f938/adding-4000-child-controls-to-flowlayoutpanel-freezez-the-scrolling?forum=winforms
• Populating a FlowLayoutPanel with a large number of controls and painting thumbnails on demand
• How can i implement the paging effect in a FlowLayoutPanel control?
• Winforms: Scrollable FlowLayoutPanel with thousands of user controls - How to prevent memory leaks and dispose objects the right way?
• https://www.dreamincode.net/forums/topic/381141-flowlayoutpanel-paging-effect/

 private void FlowLayoutPanel_MouseMove(object sender,MouseEventArgs e)
        {
            // move flowlayoutpanel with mouse
            if (e.Button != MouseButtons.Left)
                return;

            Point pointDifference = new Point(Cursor.Position.X + mouseDownPoint.X,Cursor.Position.Y - mouseDownPoint.Y);
            if ((mouseDownPoint.X == Cursor.Position.X) && (mouseDownPoint.Y == Cursor.Position.Y))
                return;

            Point currAutoScroll = FlowLayoutPanel.AutoScrollPosition;
            FlowLayoutPanel.AutoScrollPosition = new Point(Math.Abs(currAutoScroll.X) - pointDifference.X,Math.Abs(currAutoScroll.Y) - pointDifference.Y);
            mouseDownPoint = Cursor.Position;

            
            //
            Point locationOnForm = UClist[0].FindForm().PointToClient(
            UClist[0].Parent.PointToScreen(new Point(UClist[0].Location.X,UClist[0].Location.Y+300)));
            if (locationOnForm.Y < 190)
            {
                FlowLayoutPanel.SuspendLayout();
                FlowLayoutPanel.Controls.Clear();
                FlowLayoutPanel.Controls.AddRange(UClist.Skip(2).Take(2).ToArray());
                FlowLayoutPanel.ResumeLayout();
            }   
        }

我应该怎么办？

编辑 这就是我说的“回合”

解决方法

暂无找到可以解决该程序问题的有效方法，小编努力寻找整理中！

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