C# 器皿上控件排序

public static class Sort    {        #region 设置PanelControl上按钮显示位置        /// <summary>        /// 设置按钮显示位置        /// </summary>        /// <param name="targetPanel">需要调整按钮顺序的Panel</param>        /// <param name="buttonSpace">按钮间隔</param>        public static void SetButtonCenter(ScrollableControl targetPanel, int buttonSpace)        {            int length = 0;            int maxHeight = 0;            List<Control> listBtn = new List<Control>();            System.Windows.Forms.Control.ControlCollection c = targetPanel.Controls;            foreach (Control btn in c)            {                listBtn.Add(btn);                length += btn.Width + buttonSpace;                if (maxHeight < btn.Height)//获取最大高度                {                    maxHeight = btn.Height;                }            }            int pnlLength = targetPanel.Width;            if (length > pnlLength) //本身按钮的长度总和大于了panel的长度，不调整            {                return;            }            int startPos = ((pnlLength - length) / 2);            int yPos = 0;            if (maxHeight < targetPanel.Height)            {                yPos = (targetPanel.Height - maxHeight) / 2;//距离panel上边框的距离            }            else            {                yPos = targetPanel.Height / 10;//距离panel上边框的距离            }            int xPos = startPos;            listBtn.Sort(new ButtonSort());            foreach (Control btn in listBtn)            {                btn.Location = new System.Drawing.Point(xPos, yPos);                xPos += btn.Width + buttonSpace;            }        }        #endregion         #region 设置Control上按钮显示位置        /// <summary>        /// 设置按钮显示位置        /// </summary>        /// <param name="container">需要调整按钮顺序的容器控件</param>        /// <param name="buttonSpace">按钮间隔</param>        public static void SetButtonCenter(Control container, int buttonSpace)        {            int length = 0;            int maxHeight = 0;            List<Control> listControl = new List<Control>();            System.Windows.Forms.Control.ControlCollection c = container.Controls;            foreach (Control btn in c)            {                listControl.Add(btn);                length += btn.Width + buttonSpace;                if (maxHeight < btn.Height)//获取最大高度                {                    maxHeight = btn.Height;                }            }            int pnlLength = container.Width;            if (length > pnlLength) //本身按钮的长度总和大于了panel的长度，不调整            {                return;            }            int startPos = ((pnlLength - length) / 2);            int yPos = 0;            if (maxHeight < container.Height)            {                yPos = (container.Height - maxHeight) / 2;//距离panel上边框的距离            }            else            {                yPos = container.Height / 10;//距离panel上边框的距离            }            int xPos = startPos;            listControl.Sort(new ButtonSort());            foreach (Control btn in listControl)            {                btn.Location = new System.Drawing.Point(xPos, yPos);                xPos += btn.Width + buttonSpace;            }        }        #endregion     }

 public class ButtonSort : IComparer<Control>    {        #region IComparer<Button> Members        //IComparer<T> 接口:定义类型为比较两个对象而实现的方法。        public int Compare(Control x, Control y)        {            if (x.TabIndex >= y.TabIndex)            {                return 1;            }            else            {                return -1;            }        }        #endregion    }