C# 窗体抖动

 private void button1_Click(object sender, EventArgs e)        {            int recordx = this.Left; //指定窗体左边值            int recordy = this.Top;  //指定窗体上边值            for (int i = 0; i < 10; i++) //抖动次数            {                if (i % 2 == 0)  //如果i 能给2整除                {                    this.Left = this.Left + 10; //窗体左边值加10                }                else  //否则                {                    this.Left = this.Left - 10;//窗体左边边值减10                }                if (i % 2 == 0)//如果i能给2整除                {                    this.Top = this.Top + 10;//窗体上边值加10                }                else//否则                {                    this.Top = this.Top - 10;//窗体上边值减10                }                System.Threading.Thread.Sleep(30); //震动频率            }            this.Left = recordx;  //恢复初始状态            this.Top = recordy;   <span style="font-family: Arial, Helvetica, sans-serif;">//</span><span style="font-family: Arial, Helvetica, sans-serif;">恢复初始状态</span>        }