相关疑难解决方法(0)

我有一个FixedDocument允许用户在 WPF GUI 中预览，然后打印到纸上而不显示任何 Windows 打印对话框，如下所示：

private void Print()
{
    PrintQueueCollection printQueues;
    using (var printServer = new PrintServer())
    {
        var flags = new[] { EnumeratedPrintQueueTypes.Local };
        printQueues = printServer.GetPrintQueues(flags);
    }

    //SelectedPrinter.FullName can be something like "Microsoft Print to PDF"
    var selectedQueue = printQueues.SingleOrDefault(pq => pq.FullName == SelectedPrinter.FullName);

    if (selectedQueue != null)
    {
        var myTicket = new PrintTicket
        {
            CopyCount = 1,
            PageOrientation = PageOrientation.Portrait,
            OutputColor = OutputColor.Color,
            PageMediaSize = new PageMediaSize(PageMediaSizeName.ISOA4)
        };

        var mergeTicketResult = selectedQueue.MergeAndValidatePrintTicket(selectedQueue.DefaultPrintTicket, myTicket);
        var …