在.NET中打印到XPS文件时如何默认文件名

从我的.NET应用程序中选择Microsoft XPS Document Writer进行打印时，将向用户显示一个文件对话框，其中文件名最初为"* .XPS".我希望它默认使用一个更有用的名称(理想情况下，使用我提供的文档名称).

When the Microsoft XPS Document Writer is selected for printing from my .NET application, the user is presented with a file dialog where the file name is initially "*.XPS". I'd like it to default to a more useful name instead (ideally, using the document name I am providing).

我阅读了以下问题:

如何默认生成的XPS名称文件?

...并尝试按照答案中的建议设置PrinterSettings.PrintFileName，但这似乎不起作用...

...and tried setting the PrinterSettings.PrintFileName as suggested in the answers, but it does not seem to work...

        PrintDialog printDlg = new PrintDialog();
        PrintDocument printDoc = new PrintDocument();

        printDoc.DocumentName = name;
        printDlg.Document = printDoc;
        printDlg.AllowSelection = true;
        printDlg.AllowSomePages = true;

        //Call ShowDialog 

        if (printDlg.ShowDialog() == DialogResult.OK)
        {
            if (!printDoc.PrinterSettings.IsValid)
            {
                throw new Exception("Error: cannot find the default printer.");
            }
            else
            {
                if (printDoc.PrinterSettings.PrinterName.Contains("XPS"))
                {
                    printDoc.PrinterSettings.PrintFileName = name + ".XPS";
                }

                // Actual printing code from this point onward...

如果我打印到Adobe PDF，则默认文件名为打印文档名称+".PDF"(理想行为)，但是内置XPS打印驱动程序似乎缺少此功能，甚至似乎忽略了PrintFileName属性.我是在做错什么，还是XPS打印驱动程序有问题?

If I print to Adobe PDF, it defaults the file name to the print document name + ".PDF" (ideal behavior), but the built-in XPS print driver seems to lack this feature, and even seems to be ignoring the PrintFileName property. Am I doing something wrong, or is this an issue with the XPS print driver?

顺便说一句，我正在Vista Business SP2上使用VS 2010/.NET 4.0(均为SP1)

BTW, I am using VS 2010 / .NET 4.0 (both SP1) on Vista Business SP2