c# - 如何从打印机变量中获取纸张大小？

Question

我有 3 台打印机连接到我的 PC，在我的 win 窗体上，我在代码中选择按名称打印(我不使用 PrintDialog)。每台打印机都有不同的纸张尺寸(小、中、大)。有什么办法可以获得当前打印机的纸张尺寸。 我试试

Console.WriteLine(e.PageSettings.Bounds.ToString());
Console.WriteLine(e.PageSettings.PaperSize.ToString());
Console.WriteLine(e.Graphics.VisibleClipBounds.ToString());
Console.WriteLine(e.Graphics.ClipBounds.ToString());

我从委托(delegate)参数方法中获取变量 e:

// When I launch my printer (in class constructor):
PrintDocument pd = new PrintDocument();
pd.PrintPage += new PrintPageEventHandler(PrintLabel);
//.... other code



//My delegate method:
   private void PrintLabel(object o, PrintPageEventArgs e)
   {
      //This is my code from above:
        Console.WriteLine(e.PageSettings.Bounds.ToString());
      // other code
   }

但无论我使用哪台打印机，它都会显示相同的尺寸。 提前致谢。

Answer 1

为什么不直接使用 System.Drawing.Printing 命名空间中的专门设计的类？ 或者我错过了问题中的某些内容？

using System.Drawing.Printing;

public static PageSettings GetPrinterPageInfo(String printerName) {
  PrinterSettings settings;

  // If printer name is not set, look for default printer
  if (String.IsNullOrEmpty(printerName)) {
    foreach (var printer in PrinterSettings.InstalledPrinters) {
      settings = new PrinterSettings();

      settings.PrinterName = printer.ToString();

      if (settings.IsDefaultPrinter)
        return settings.DefaultPageSettings;
    }

    return null; // <- No default printer  
  }

  // printer by its name 
  settings = new PrinterSettings();

  settings.PrinterName = printerName;

  return settings.DefaultPageSettings;
}

// Default printer default page info
public static PageSettings GetPrinterPageInfo() {
  return GetPrinterPageInfo(null);
}

...

// Default printer default page
PageSettings page = GetPrinterPageInfo(); 
// Or default page of some other printer given by its name
// PageSettings page = GetPrinterPageInfo(MyPrinterName); 

RectangleF area = page.PrintableArea;
Rectangle bounds = page.Bounds;
Margins margins = page.Margins;