`PrintQueue.AddJob`尚未完成 [英] `PrintQueue.AddJob` does not finish

问题描述

我尝试在某些PC上遵循以下代码.

I tried following code on some PCs.

using (var lps = new LocalPrintServer())
using(var pqueue = lps.GetPrintQueue("PRINTER-NAME"))
{
    pqueue.AddJob("job-name", @"C:\example.xps", false, pticket);
}

仅在一台PC上，它不起作用.应用程序冻结在 AddJob 方法.即使等待了很长时间，它也从未完成.没有例外.

On only one PC, it did not work. The application froze at AddJob method. It never finished even after waiting for long time. There are no exceptions.

发生此问题的PC是Windows10，并应用了CreatorsUpdate.其他PC是应用了AnniversaryUpdate的Windows7，Windows8.1和Windows10.

The PC where this problem occurred is Windows10 and applied CreatorsUpdate. Other PCs are Windows7, Windows8.1 and Windows10 applied AnniversaryUpdate.

此问题是CreatorsUpdate的错误吗?

Is this problem a bug of CreatorsUpdate?

补充:
具有CreatorsUpdate的PC可以通过此代码打印xps文件.

Supplement:
The PC which has CreatorsUpdate can print xps file by this code.

using (var lps = new LocalPrintServer())
using(var pqueue = lps.GetPrintQueue("PRINTER-NAME"))
using (var doc = new XpsDocument(@"C:\example.xps", System.IO.FileAccess.Read))
{
    var writer = PrintQueue.CreateXpsDocumentWriter(pqueue);
    var docSeq = doc.GetFixedDocumentSequence();
    writer.Write(doc, pticket);
}

推荐答案

我确定目标打印机驱动程序不是基于XPS的.我对此有同样的问题.

I am sure that the target printer driver is not XPS based. I had the same problem with that.

您可以先通过以下方法检查打印机的兼容性:

You may first check the compatibility of the printer through:

LocalPrintServer server = new LocalPrintServer(PrintSystemDesiredAccess.AdministrateServer);
PrintQueue queue = server.GetPrintQueue("MyPrinterName");            
MessageBox.Show(queue.IsXpsDevice.ToString());

如果结果为假，那就是原因.

If the result is false, then that's why.

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