推荐订阅源

原理：间隔一定时间，改变窗体的位置，必须是围绕起始位置改变窗体位置，否则就成窗体移动了

代码

private void button1_Click(object sender, EventArgs e)
        {
            Random ran = new Random((int)DateTime.Now.Ticks);
            Point point = this.Location;
            for (int i = 0; i < 40; i++)
            {
                this.Location = new Point(point.X + ran.Next(8) - 4, point.Y + ran.Next(8) - 4);
                System.Threading.Thread.Sleep(15);
                this.Location = point;
                System.Threading.Thread.Sleep(15);
            }
        }

 http://blog.csdn.net/jianuMan/archive/2010/06/18/5678912.aspx