我在WinForms项目的主面板中添加一个新的小部件时遇到了一个意想不到的问题。（Bottom + 2）的其他.这个地方我在我的静态变量.一切正常，正如我所料.当我点击底部+，我的面板出现在第一个（图片1）. Everything is OK但是，如果我点击我的按钮+，这样一个滚动线可以出现，我把它向下移动，并再次点击我的按钮+.下一个面板放置不只是（底部+ 2），但它增加了一些像素取决于多远是滚动按钮从它的中性点。图片（2）This space between my Panels is getting bigger than far than I move the scrollButton
我的类代码

internal class AddPanel
    {
        const int coordX = 3;
        static int coordY = 4;
        static int num;

        TextBox TBnum, TBquest, TBansw; // for each textbox from our panel
        Panel newPanel; // the panel proper

        public AddPanel(Panel MainPanel, params Button[] buttons)
        {
            newPanel = new Panel();
            TBnum = new TextBox();
            TBquest = new TextBox();
            TBansw = new TextBox();

            newPanel.Location = new Point(coordX, coordY); //TODO: Change coords
            newPanel.Size = new Size(350, 88);
            newPanel.Name = "MyPanel" + Convert.ToString(num);

            TBnum.Location = new Point(3, 3);
            TBnum.Name = "MyTBNum" + Convert.ToString(num);
            TBnum.Size = new Size(27, 23);

            TBquest.Location = new Point(50, 3);
            TBquest.Name = "MyTBquest" + Convert.ToString(num);
            TBquest.Size = new Size(287, 23);

            TBansw.Location = new Point(50, 32);
            TBansw.Name = "MyTBansw" + Convert.ToString(num);
            TBansw.Multiline = true;
            TBansw.Size = new Size(287, 47);

            if (num == 0)
            {
                TBnum.PlaceholderText = "1";
                TBquest.PlaceholderText = "Вопрос. Напр: Адрес приемной комиссии?";
                TBansw.PlaceholderText = "Ответ на вопрос";

            }
            else TBnum.Text = Convert.ToString(num + 1);

            //foreach (Button btn in buttons)
                //btn.Location = new Point(btn.Location.X, btn.Location.Y + 100);

            newPanel.Controls.Add(TBnum);
            newPanel.Controls.Add(TBquest);
            newPanel.Controls.Add(TBansw);
            newPanel.BorderStyle = BorderStyle.FixedSingle;
            MainPanel.Controls.Add(newPanel);

            coordY = newPanel.Bottom + 2 ;
            num++;

        }

        static AddPanel()
        {
            num = 0;
        }
    }

按钮代码：

new AddPanel(MainScrollPanel, UpButton, DownButton);

我怎么能处理这个问题呢？我试着谷歌了一下，但什么也没找到。