在C#中打印Win Form时如何提高打印质量

我正试图使用GDI打印我的表单，但当我打印它时，打印质量不是很好（不知道图像是否有别名？），表单大小是700x700，还有一个参数可以理解-光栅操作代码-，这里是代码正在使用。。。

  private void printDocument1_PrintPage(object sender, PrintPageEventArgs e)
    {
        Graphics g1 = this.CreateGraphics();
        System.Drawing.Image MyImage = new Bitmap(this.ClientRectangle.Width, this.ClientRectangle.Height, g1);
        Graphics g2 = Graphics.FromImage(MyImage);
        IntPtr dc1 = g1.GetHdc();
        IntPtr dc2 = g2.GetHdc();
        BitBlt(dc2, 0, 0, this.ClientRectangle.Width, this.ClientRectangle.Height, dc1, 0, 0, 13369376);
        g1.ReleaseHdc(dc1);
        g2.ReleaseHdc(dc2);
        Bitmap bmp = new Bitmap(MyImage);
        int x = e.MarginBounds.X;
        int y = e.MarginBounds.Y;
        int width = bmp.Width;
        int height = bmp.Height;
        if ((width / e.MarginBounds.Width) > (height / e.MarginBounds.Height))
        {
            width = e.MarginBounds.Width;
            height = bmp.Height * e.MarginBounds.Width / bmp.Width;
        }
        else
        {
            height = e.MarginBounds.Height;
            width = bmp.Width * e.MarginBounds.Height / bmp.Height;
        }
        System.Drawing.Rectangle destRect = new System.Drawing.Rectangle(x, y, width, height);
        e.Graphics.DrawImage(bmp, destRect, 0, 0, bmp.Width, bmp.Height, System.Drawing.GraphicsUnit.Pixel);
    }