如何阻止我的c#表格中的paint事件自动触发？

Question

我有一个图片框，我想以固定的速度绘制（例如60次/秒，60fps）。经过几个小时的谷歌搜索，我唯一能找到的信息是在定时器中使用Invalidate()方法来固定控件的重绘速度......（duh）。我也想这么做，但问题是画框上的Paint事件已经在程序启动时被自己不断调用了。这当然会占用很多额外的cpu。我如何才能阻止它自动发射？

class Block {

        public bool alive;

        public Block(bool alive) {
            this.alive = alive;
        }

    }

public partial class Form2 : Form {
        public Form2() {
            InitializeComponent();
        }

        int w;
        int width;
        int height;
        Bitmap myBitmap;
        Block[,] block;
        Block[,] buffer;

        private void Form2_Load(object sender, EventArgs e) {
            myBitmap = new Bitmap(Width, Height);
            w = 3;
            width = 700 / w;
            height = 400 / w;
            initblocks();

        }

        private void initblocks() {
            block = new Block[width, height];
            for (int x = 0; x < width; x++) {
                for (int y = 0; y < height; y++) {
                    block[x, y] = new Block(false);
                }
            }
        }

        private void randomizeBlocks() {
            Random r = new Random();
            buffer = new Block[width, height];
            for (int x = 0; x < width; x++) {
                for (int y = 0; y < height; y++) {
                    buffer[x, y] = new Block((r.Next(2) == 0));
                }
            }
            block = buffer;
        }

        protected void pictureBox1_Paint(object sender, PaintEventArgs e) {
            randomizeBlocks();
            Graphics g = Graphics.FromImage(myBitmap);
            Pen pen = new Pen(Color.Black);
            //draw the blocks
            for (int x = 0; x < width; x++) {
                for (int y = 0; y < height; y++) {
                    try {
                        if (block[x, y].alive) {
                            g.FillRectangle(Brushes.Black, x * w, y * w, w, w);
                        }
                    } catch (Exception) {
                        Console.WriteLine("Draw blocks error");
                    }
                }
            }

            //draw the grid
            for (int y = 0; y < height + 1; y++) {
                g.DrawLine(pen, 0, y * w, width * w, y * w);
            }

            for (int x = 0; x < width + 1; x++) {
                g.DrawLine(pen, x * w, 0, x * w, height * w);
            }

            //finish up
            pictureBox1.Image = myBitmap;
            myBitmap = new Bitmap(Width, Height);
            pen.Dispose();
            g.Dispose();
        }