public class WindowOne:Form    {        public WindowOne()        {            InitializeCompnent();        }        public void InitializeCompnent()        {            this.Width = 200;            this.Height = 200;        }        //冲毁window 方法        private void ReDraw(Graphics g)        {            Random ran = new Random();            //Color ranColor = Color.FromArgb(ran.Next(256), ran.Next(256)            //    , ran.Next(256), ran.Next(256));            Color ranColor = Color.FromArgb(100, ran.Next(256)                , ran.Next(256), ran.Next(256));            g.Clear(ranColor);        }        /// <summary>        /// 窗体绘制 事件        /// </summary>        /// <param name="e"></param>        protected override void OnPaint(PaintEventArgs e)        {            //base.OnPaint(e);            ReDraw(e.Graphics);        }        /// <summary>        /// 窗体大小 重置        /// </summary>        /// <param name="e"></param>        protected override void OnResize(EventArgs e)        {            //强制重新绘制            this.Invalidate();        }    }