打印问题

private void print(object sender, EventArgs e)
  {
  printDialog1.Document = printDocument1;
  StringReader MySReader = new StringReader(richTextBox1.Text);
  if(printDialog1.ShowDialog()==DialogResult.OK)
  {
  try
  {
  printDocument1.Print();
  }
  catch
  {
  printDocument1.PrintController.OnEndPrint(printDocument1, new System.Drawing.Printing.PrintEventArgs());
  }
  }
为什么我打印不出TEXT的！什么问题，总感觉stringreader对象用不上！print方法又没参数重载！求解

追加个问题就是printDialog1.Document = printDocument1;这句什么意思啊，=printDocument有什么用呢

printDocument1_PrintPage事件中用
e.Graphics.DrawString（）绘制页面才能打印