如何在 C# .NET 中捕获打印作业 [英] How to catch print jobs in C# .NET

问题描述

我试图在我们的本地网络中捕获提交给打印机的每个打印作业.我想显示作业的一些属性，如作业名称、提交时间等.

I am trying to catch every print jobs submitted to printer in our local network. I want to display some properties of the job like job name, submit time and so on.

我尝试了一个 while 循环，但它没有抓住我的打印作业，可能是因为它发生在线程休眠时.是否有我可以注册和处理的事件?我不想为这个任务无限循环地花费所有的 CPU 资源.

I tried a while loop but it didn't catch my print job, maybe beacuse it happened while the thread was sleeping. Is there an event that I can register and handle? I don't want to spend all of the CPU resource for this task infinetly looping.

我试过了:

public static void WritePrinterJobs()
    {
        while (true)
        {
            foreach (var job in LocalPrintServer.GetDefaultPrintQueue().GetPrintJobInfoCollection())
            {
                Console.WriteLine(job.Submitter + " " + job.TimeJobSubmitted.ToShortDateString());
            }
            Thread.Sleep(100);
        }
    }

上面的代码实际上有效，如果它对你有效，你不需要降低级别，我的错误是没有正确配置默认打印机.

The code above actually works, you don't need to go lower level if it does work for you, my mistake was not configuring default printer correctly.

推荐答案

我找到了解决方案.对于那些正在寻找处理打印作业事件的方法的人，请查看:

I found the solution. For those are searching for a way to handle print job events take a look:

FindFirstPrinterChangeNotification

还可以找到工作代码监控打印作业

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