C# 三种实现抖屏的方式

    　　　　　//int a = -2;
            //this.BringToFront();
            //for (int i = 0; i < 20; i++)
            //{
            //    a = -a;
            //    this.Location = new Point(this.Location.X + 6 * a, this.Location.Y + 8 * a);

            //    Thread.Sleep(100);

            //}
            //2.
            //int X = this.Top; int Y = this.Left;

            //for (int i = 0; i < 100; i++)
            //{

            //    this.Top = this.Top + 10;

            //    this.Left = this.Left + 10;

            //    this.Top = this.Top - 10;

            //    this.Left = this.Left - 10;

            //}

            ////回到原来的位置

            //this.Top = X;
            //this.Left = Y;

            //3.
            Point pOld = this.Location;//原来的位置 
            int radius = 3;//半径 
            for (int n = 0; n < 3; n++) //旋转圈数 
            {
                //右半圆逆时针 
                for (int i = -radius; i <= radius; i++)
                {
                    int x = Convert.ToInt32(Math.Sqrt(radius * radius - i * i));

                    int y = -i;

                    this.Location = new Point(pOld.X + x, pOld.Y + y);

                    System.Threading.Thread.Sleep(10);


                }

                //左半圆逆时针
                for (int j = radius; j >= -radius; j--)
                {
                    int x = -Convert.ToInt32(Math.Sqrt(radius * radius - j * j));
                    int y = -j;
                    this.Location = new Point(pOld.X + x, pOld.Y + y);
                    System.Threading.Thread.Sleep(10);
                }
            }

            this.Location = pOld;