如何在c＃中打印文档时更改纸张尺寸

Question

我正在使用C＃的PrintDocument类通过虚拟postscript打印机和ghostscript创建pdf。我希望能够在PrintPage事件中更改页面的大小，即在打印页面时。我知道可以在打印文档之前以及QueryPageSettings事件中更改页面大小。

这是我演示问题的示例代码：

PrintDocument doc = new PrintDocument();
doc.PrinterSettings.PrinterName = "Printer Name";

// V This can change the page size V
doc.DefaultPageSettings.PaperSize = new PaperSize("Custom", 1000, 200);

doc.QueryPageSettings += (sender, args) =>
  {
  // V This can also change the page size V
  args.PageSettings.PaperSize = new PaperSize("Custom", 1000, 200);
  };

doc.PrintPage += (sender, args) =>
  {
  // V This can not change the page size V
  doc.PrinterSettings.PaperSize = new PaperSize("Custom", 1000, 200);

  // V This changes the paper size for future pages V
  args.PageSettings.PaperSize = new PaperSize("Custom", 1000, 200);


  args.Graphics.DrawString("Text", new Font("Courier New", 13.0f), Brushes.Black, 0f, 50);
  };

doc.Print();