使用System.Drawing.Printing获取队列状态 [英] Using System.Drawing.Printing to get Queue Status

问题描述

我一直在尝试使用System.Drawing.Printing;来获取网络打印机的队列状态.

I've been trying to use System.Drawing.Printing; in order to get the queue status of a network printer.

我可以检索打印机的属性，但似乎无法真正获得队列状态.

I can retrieve the properties of the printer but I can't really seem to get the queue status.

这是我到目前为止尝试过的:

This is what I've tried so far:

PrinterSettings ps = new PrinterSettings();
ps.PrinterName = "ES5461 MFP(PCL)"; // Load the appropriate printer's setting

从那里我可以看到打印机是有效的，因为ps.IsValid是true，但是我不能再继续了.

From there I can see that the Printer is valid since ps.IsValid is true but I can't go any further.

我也尝试过使用System.Management来检索状态，但是我只知道如何转储信息，也没有队列信息.

I've tried as well to use System.Management to retrieve the status but I just know how to dump the information and there's no queue information as well.

string printerName = "ES5461";
string query = string.Format("SELECT * from Win32_Printer WHERE Name LIKE '%{0}%'", printerName);

ManagementObjectSearcher searcher = new ManagementObjectSearcher(query);
ManagementObjectCollection coll = searcher.Get();

foreach (ManagementObject printer in coll)
{
    foreach (PropertyData property in printer.Properties)
    {
        Console.WriteLine(string.Format("{0}: {1}", property.Name, property.Value));
    }
}

您知道使用任何.dll检索队列状态(文档数)的任何方法吗?

Do you know of any way to retrieve the queue status (number of documents) using any .dll?

推荐答案

感谢Nissim，我可以解决它:

Thanks to Nissim I could solve it:

var printServer = new PrintServer();
var myPrintQueues = printServer.GetPrintQueues(new[] { EnumeratedPrintQueueTypes.Local, EnumeratedPrintQueueTypes.Connections });

foreach (PrintQueue pq in myPrintQueues)
{
    pq.Refresh();
    if (!pq.Name.ToLower().Contains("es5461")) continue;  
    PrintJobInfoCollection jobs = pq.GetPrintJobInfoCollection();
    foreach (PrintSystemJobInfo job in jobs)
    {
        var aux = job;
    }// end for each print job    
}// end for each print queue

正如Nissim所建议的，结合使用PrintServer(System.Printing)和PrintQueue，我实际上可以访问队列信息.

As you can see using the PrintServer (System.Printing) combined with the PrintQueue as suggested by Nissim I can actually access to the queue information.

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