打印表格给我空白页面

Question

使用MSDN中有关如何打印Windows窗体的代码示例，我已经改变了我的第一个打印机选项，然后打印，但我一直收到一个空白页面。使用CopyFromScreen，我给出了表格源X＆amp;的坐标。是的，但是对于目的地，我尝试了0以及this.Location.X & Y。还有另一种捕获图像的方法吗？

private void printButton_Click(object sender, EventArgs e)
    {
        CaptureScreen();

        printDialog1.AllowSomePages = true;

        printDialog1.ShowHelp = true;

        printDialog1.Document = printDoc1;

        DialogResult result = printDialog1.ShowDialog();

        if (result == DialogResult.OK)
        {
            printDoc1.Print();
        }
    }        

 private void CaptureScreen()
    {
        Graphics myGraphics = this.CreateGraphics();
        Size s = this.Size;
        memoryImage = new Bitmap(s.Width, s.Height, myGraphics);
        Graphics memoryGraphics = Graphics.FromImage(memoryImage);
        memoryGraphics.CopyFromScreen(this.Location.X, this.Location.Y, 0, 0, s);
    }

void printDoc1_PrintPage(object sender, PrintPageEventArgs e)
    {
        e.Graphics.DrawImage(memoryImage, 0, 0);
    }