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Check status of printer using vb.net

Posted on 2008-06-24
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Last Modified: 2013-11-07
I need to be able to determine if a printer exists and if it is online.  The name of the printer to be checked is stored as a setting of the program i am creating.   Is it possible to check that status of a printer using vb.net?   The printer may be a local printer or network printer.
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Question by:Mike_Stevens
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6 Comments
 
LVL 53

Accepted Solution

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Dhaest earned 250 total points
ID: 21855124
Possible solution found at http://bytes.com/forum/thread351305.html
Private Enum PrinterStatus
PrinterIdle = 3
PrinterPrinting = 4
PrinterWarmingUp = 5
' For more states see WMI docs.
End Enum
 
Private Function PrinterStatusToString(ByVal ps As PrinterStatus) As
String
Dim s As String
Select Case ps
Case PrinterStatus.PrinterIdle
s = "waiting (idle)"
Case PrinterStatus.PrinterPrinting
s = "printing"
Case PrinterStatus.PrinterWarmingUp
s = "warming up"
Case Else ' Vielleicht gibt es noch weitere Fälle...
s = "unknown state"
End Select
PrinterStatusToString = s
End Function
 
Private Sub Form1_Load( _
ByVal sender As System.Object, _
ByVal e As System.EventArgs _
) Handles MyBase.Load
Dim strPrintServer As String
strPrintServer = "localhost"
Dim WMIObject As String, PrinterSet As Object, Printer As Object
WMIObject = "winmgmts://" & strPrintServer
PrinterSet = GetObject(WMIObject).InstancesOf("win32_Printer")
For Each Printer In PrinterSet
MsgBox( _
Printer.Name & ": " & _
PrinterStatusToString(Printer.PrinterStatus) _
)
Next Printer
End Sub

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LVL 53

Expert Comment

by:Dhaest
ID: 21855148
Another article about the subject
How to Check if your Printer is Connected
http://www.codeproject.com/KB/printing/printeroffline.aspx
Imports System 
Imports System.Management 
    Class PrinterOffline 
        <STAThread()> _ 
        Private Shared Sub Main(ByVal args As String()) 
            ' Set management scope 
            Dim scope As New ManagementScope("\root\cimv2") 
            scope.Connect() 
            
            ' Select Printers from WMI Object Collections 
            Dim searcher As New ManagementObjectSearcher("SELECT * FROM Win32_Printer") 
            
            Dim printerName As String = "" 
            For Each printer As ManagementObject In searcher.[Get]() 
                printerName = printer("Name").ToString().ToLower() 
                If printerName.Equals("hp deskjet 930c") Then 
                    Console.WriteLine("Printer = " + printer("Name")) 
                    If printer("WorkOffline").ToString().ToLower().Equals("true") Then 
                        ' printer is offline by user 
                        Console.WriteLine("Your Plug-N-Play printer is not connected.") 
                    Else 
                        ' printer is not offline 
                        Console.WriteLine("Your Plug-N-Play printer is connected.") 
                    End If 
                End If 
            Next 
        End Sub 
    End Class 

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LVL 27

Assisted Solution

by:planocz
planocz earned 250 total points
ID: 21855197
Here is another sample of how you can do it...


  Public Function InitializeDefaultPrinter() As String
        ' Set the specified printer to the default printer for this program. Return
        ' true if the printer was found.
 
        Dim objprinter As PageSettings = New PageSettings
        Dim strname As String = objprinter.PrinterSettings.PrinterName
 
        Return strname
    End Function
    Public Sub Printer_Check()
        Dim regKey As RegistryKey
        Dim sPrinterDriver As String
        Dim sPrinterPort As String
        Dim myProcess As New Process
        Dim sDefaultPrinter As String
        Dim keyValue As String
 
        'To get the Printer driver...
        sDefaultPrinter = InitializeDefaultPrinter()
        'If sDefaultPrinter.StartsWith("\") Then
        '    sDefaultPrinter = sDefaultPrinter.Substring(2)
        'End If
        keyValue = "Software\\Microsoft\\Windows NT\\CurrentVersion\\Print\\Printers\\" & sDefaultPrinter
        regKey = Registry.LocalMachine.OpenSubKey(keyValue, False)
        sPrinterDriver = regKey.GetValue("Printer Driver", 0)
        sPrinterPort = regKey.GetValue("Port", 0)
        regKey.Close()
    End Sub

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Expert Comment

by:ghendric
ID: 23838921
Is there a way to see if there is a timeout error? For example, the printer runs out of paper and times out or throws an error..
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