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POHow to Determine Which Printers are Connected using WMI
 

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  1. POHow to Determine Which Printers are Connected using WMI
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    <p>I've been trying to find a way to figure out which installed printers are 'connected'. After some Googling I figured I had to dive into WMI.</p> <p>So I've built this test:</p> <pre><code>// Struct to store printer data in. public struct MyPrinter { public string Availability; public string ExtendedPrinterStatus; public string Name; public string PrinterStatus; public string Status; public string StatusInfo; public MyPrinter(string a, string eps, string n, string ps, string s, string si) { Availability = a; ExtendedPrinterStatus = eps; Name = n; PrinterStatus = ps; Status = s; StatusInfo = si; } } var installedPrinters = new string[numPrinters]; PrinterSettings.InstalledPrinters.CopyTo(installedPrinters, 0); var searcher = new ManagementObjectSearcher("SELECT * FROM Win32_Printer"); var data = new List&lt;MyPrinter&gt;(); foreach (var printer in searcher.Get()) { if (installedPrinters.Contains(printer["Name"].ToString())) { var availability = (printer["Availability"] ?? "").ToString(); var extendedPrinterStatus = (printer["ExtendedPrinterStatus"] ?? "").ToString(); var name = (printer["Name"] ?? "").ToString(); var printerStatus = (printer["PrinterStatus"] ?? "").ToString(); var status = (printer["Status"] ?? "").ToString(); var statusInfo = (printer["StatusInfo"] ?? "").ToString(); data.Add(new MyPrinter(availability, extendedPrinterStatus, name, printerStatus, status, statusInfo)); } } </code></pre> <p>I have 6 printers from which 2 are network printers. I've run this with all printers connected and all results looked like this:</p> <pre><code>Availability = "" // printer["Availability"] = null ExtendedPrinterStatus = "2" // 2 = Unknown Name = "{printer name here}" PrinterStatus = "3" // 3 = Idle Status = "Unknown" StatusInfo = "" // Null </code></pre> <p>So the only difference between the printers is the name. I ran the script again but this time I disconnected my laptop from the network. So 2 of the printers were not connected anymore in this case.</p> <p>The strange thing (for me) is, the results were exactly the same.</p> <p>The reason I ran this test is, to figure out which field I'd need to use for my case.</p> <p>So at the end, I have not been able to figure out how to figure out if a printer is connected or not. So what I'd like, is a way to figure out the installed + connected printers in C#. If there is a way to do it without the use of WMI classes, that's also fine by me, as long as it works.</p>
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    1. USJohn Saunders
    1. USMrSoundless
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    1. COLooks identical to this question: http://stackoverflow.com/questions/2327763/is-there-a-possibility-to-differ-virtual-printer-from-physical-one?rq=1
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      1. POHow to Determine Which Printers are Connected using WMI
      1. USLizz
    2. CONot really. That's about virtual printers while this one is about connected printers.
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      1. USMrSoundless
 

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