Como: Diagnosticar trabalho de impressão problemático

Artigo
12/17/2024

Os administradores de rede geralmente apresentam reclamações de usuários sobre trabalhos de impressão que não imprimem ou imprimem lentamente. O rico conjunto de propriedades de trabalho de impressão expostas nas APIs do Microsoft .NET Framework fornece um meio para executar um diagnóstico remoto rápido de trabalhos de impressão.

Exemplo

Os principais passos para criar este tipo de utilitário são os seguintes.

Identifique o trabalho de impressão do qual o usuário está reclamando. Os usuários muitas vezes não podem fazer isso com precisão. Eles podem não saber os nomes dos servidores de impressão ou impressoras. Eles podem descrever a localização da impressora em terminologia diferente da que foi usada na configuração de sua propriedade Location. Assim, é uma boa ideia gerar uma lista dos trabalhos atualmente enviados pelo usuário. Se houver mais de um, a comunicação entre o usuário e o administrador do sistema de impressão pode ser usada para identificar o trabalho que está tendo problemas. As subetapas são as seguintes.
1. Obtenha uma lista de todos os servidores de impressão.
2. Percorra os servidores para consultar as suas respetivas filas de impressão.
3. Dentro de cada passagem do loop do servidor, percorra todas as filas do servidor para consultar seus trabalhos
4. Dentro de cada passagem do loop da fila, percorra seus trabalhos e reúna informações de identificação sobre aqueles que foram enviados pelo usuário reclamante.
Quando o trabalho de impressão problemático tiver sido identificado, examine as propriedades relevantes para ver qual pode ser o problema. Por exemplo, o trabalho está em um estado de erro ou a impressora que faz a manutenção da fila ficou offline antes que o trabalho pudesse ser impresso?

O código abaixo é uma série de exemplos de código. O primeiro exemplo de código contém o loop através das filas de impressão. (Passo 1c acima.) A variável myPrintQueues é o objeto PrintQueueCollection para o servidor de impressão atual.

O exemplo de código começa atualizando o objeto de fila de impressão atual com PrintQueue.Refresh. Isso garante que as propriedades do objeto representem com precisão o estado da impressora física que ele representa. Em seguida, o aplicativo obtém a coleção de trabalhos de impressão atualmente na fila de impressão usando GetPrintJobInfoCollection.

Em seguida, o aplicativo percorre a coleção de PrintSystemJobInfo e compara cada propriedade Submitter com o alias do usuário reclamante. Se corresponderem, o aplicativo adiciona informações de identificação sobre o trabalho à cadeia de caracteres que será apresentada. (As variáveis userName e jobList são inicializadas anteriormente no aplicativo.)

for each (PrintQueue^ pq in myPrintQueues)
{
   pq->Refresh();
   PrintJobInfoCollection^ jobs = pq->GetPrintJobInfoCollection();
   for each (PrintSystemJobInfo^ job in jobs)
   {
      // Since the user may not be able to articulate which job is problematic,
      // present information about each job the user has submitted.
      if (job->Submitter == userName)
      {
         atLeastOne = true;
         jobList = jobList + "\nServer:" + line;
         jobList = jobList + "\n\tQueue:" + pq->Name;
         jobList = jobList + "\n\tLocation:" + pq->Location;
         jobList = jobList + "\n\t\tJob: " + job->JobName + " ID: " + job->JobIdentifier;
      }
   }
}

foreach (PrintQueue pq in myPrintQueues)
{
    pq.Refresh();
    PrintJobInfoCollection jobs = pq.GetPrintJobInfoCollection();
    foreach (PrintSystemJobInfo job in jobs)
    {
        // Since the user may not be able to articulate which job is problematic,
        // present information about each job the user has submitted.
        if (job.Submitter == userName)
        {
            atLeastOne = true;
            jobList = jobList + "\nServer:" + line;
            jobList = jobList + "\n\tQueue:" + pq.Name;
            jobList = jobList + "\n\tLocation:" + pq.Location;
            jobList = jobList + "\n\t\tJob: " + job.JobName + " ID: " + job.JobIdentifier;
        }
    }// end for each print job
}// end for each print queue

For Each pq As PrintQueue In myPrintQueues
    pq.Refresh()
    Dim jobs As PrintJobInfoCollection = pq.GetPrintJobInfoCollection()
    For Each job As PrintSystemJobInfo In jobs
        ' Since the user may not be able to articulate which job is problematic,
        ' present information about each job the user has submitted.
        If job.Submitter = userName Then
            atLeastOne = True
            jobList = jobList & vbLf & "Server:" & line
            jobList = jobList & vbLf & vbTab & "Queue:" & pq.Name
            jobList = jobList & vbLf & vbTab & "Location:" & pq.Location
            jobList = jobList & vbLf & vbTab & vbTab & "Job: " & job.JobName & " ID: " & job.JobIdentifier
        End If
    Next job ' end for each print job

Next pq ' end for each print queue

O próximo exemplo de código pega o aplicativo na Etapa 2. (Ver acima.) O trabalho problemático foi identificado e o aplicativo solicita as informações que o identificarão. A partir dessas informações, ele cria objetos PrintServer, PrintQueuee PrintSystemJobInfo.

Neste ponto, o aplicativo contém uma estrutura de ramificação correspondente às duas maneiras de verificar o status de um trabalho de impressão:

Você pode ler as bandeiras da propriedade JobStatus que é do tipo PrintJobStatus.
Você pode ler cada propriedade relevante, como IsBlocked e IsInError.

Este exemplo demonstra ambos os métodos, de modo que o usuário foi previamente solicitado sobre qual método usar e respondeu com "Y" se quisesse usar os sinalizadores da propriedade JobStatus. Veja abaixo os detalhes dos dois métodos. Finalmente, o aplicativo usa um método chamado ReportQueueAndJobAvailability para relatar se o trabalho pode ser impresso neste horário do dia. Este método é discutido em Descubra se um trabalho de impressão pode ser impresso nesta altura do dia.

// When the problematic print job has been identified, enter information about it.
Console::Write("\nEnter the print server hosting the job (including leading slashes \\\\): " + "\n(press Return for the current computer \\\\{0}): ", Environment::MachineName);
String^ pServer = Console::ReadLine();
if (pServer == "")
{
   pServer = "\\\\" + Environment::MachineName;
}
Console::Write("\nEnter the print queue hosting the job: ");
String^ pQueue = Console::ReadLine();
Console::Write("\nEnter the job ID: ");
Int16 jobID = Convert::ToInt16(Console::ReadLine());

// Create objects to represent the server, queue, and print job.
PrintServer^ hostingServer = gcnew PrintServer(pServer, PrintSystemDesiredAccess::AdministrateServer);
PrintQueue^ hostingQueue = gcnew PrintQueue(hostingServer, pQueue, PrintSystemDesiredAccess::AdministratePrinter);
PrintSystemJobInfo^ theJob = hostingQueue->GetJob(jobID);

if (useAttributesResponse == "Y")
{
   TroubleSpotter::SpotTroubleUsingJobAttributes(theJob);
   // TroubleSpotter class is defined in the complete example.
} else
{
   TroubleSpotter::SpotTroubleUsingProperties(theJob);
}

TroubleSpotter::ReportQueueAndJobAvailability(theJob);

// When the problematic print job has been identified, enter information about it.
Console.Write("\nEnter the print server hosting the job (including leading slashes \\\\): " +
"\n(press Return for the current computer \\\\{0}): ", Environment.MachineName);
String pServer = Console.ReadLine();
if (pServer == "")
{
    pServer = "\\\\" +Environment.MachineName;
}
Console.Write("\nEnter the print queue hosting the job: ");
String pQueue = Console.ReadLine();
Console.Write("\nEnter the job ID: ");
Int16 jobID = Convert.ToInt16(Console.ReadLine());

// Create objects to represent the server, queue, and print job.
PrintServer hostingServer = new PrintServer(pServer, PrintSystemDesiredAccess.AdministrateServer);
PrintQueue hostingQueue = new PrintQueue(hostingServer, pQueue, PrintSystemDesiredAccess.AdministratePrinter);
PrintSystemJobInfo theJob = hostingQueue.GetJob(jobID);

if (useAttributesResponse == "Y")
{
    TroubleSpotter.SpotTroubleUsingJobAttributes(theJob);
    // TroubleSpotter class is defined in the complete example.
}
else
{
    TroubleSpotter.SpotTroubleUsingProperties(theJob);
}

TroubleSpotter.ReportQueueAndJobAvailability(theJob);

' When the problematic print job has been identified, enter information about it.
Console.Write(vbLf & "Enter the print server hosting the job (including leading slashes \\): " & vbLf & "(press Return for the current computer \\{0}): ", Environment.MachineName)
Dim pServer As String = Console.ReadLine()
If pServer = "" Then
    pServer = "\\" & Environment.MachineName
End If
Console.Write(vbLf & "Enter the print queue hosting the job: ")
Dim pQueue As String = Console.ReadLine()
Console.Write(vbLf & "Enter the job ID: ")
Dim jobID As Int16 = Convert.ToInt16(Console.ReadLine())

' Create objects to represent the server, queue, and print job.
Dim hostingServer As New PrintServer(pServer, PrintSystemDesiredAccess.AdministrateServer)
Dim hostingQueue As New PrintQueue(hostingServer, pQueue, PrintSystemDesiredAccess.AdministratePrinter)
Dim theJob As PrintSystemJobInfo = hostingQueue.GetJob(jobID)

If useAttributesResponse = "Y" Then
    TroubleSpotter.SpotTroubleUsingJobAttributes(theJob)
    ' TroubleSpotter class is defined in the complete example.
Else
    TroubleSpotter.SpotTroubleUsingProperties(theJob)
End If

TroubleSpotter.ReportQueueAndJobAvailability(theJob)

Para verificar o status do trabalho de impressão usando os sinalizadores da propriedade JobStatus, verifique cada sinalizador relevante para ver se ele está definido. A maneira padrão de ver se um bit está definido em um conjunto de sinalizadores de bit é executar uma operação lógica AND com o conjunto de sinalizadores como um operando e o próprio sinalizador como o outro. Como o sinalizador em si tem apenas um bit definido, o resultado do E lógico é que, no máximo, esse mesmo bit é definido. Para saber se é ou não, basta comparar o resultado do operador lógico AND com o próprio sinalizador. Para obter mais informações, consulte PrintJobStatus, o operador de & (referência C#)e FlagsAttribute.

Para cada atributo cujo bit é definido, o código relata isso para a tela do console e, às vezes, sugere uma maneira de responder. (O método HandlePausedJob, que é chamado se o trabalho ou a fila for pausada, é discutido abaixo.)

// Check for possible trouble states of a print job using the flags of the JobStatus property
static void SpotTroubleUsingJobAttributes (PrintSystemJobInfo^ theJob) 
{
   if ((theJob->JobStatus & PrintJobStatus::Blocked) == PrintJobStatus::Blocked)
   {
      Console::WriteLine("The job is blocked.");
   }
   if (((theJob->JobStatus & PrintJobStatus::Completed) == PrintJobStatus::Completed)
      || 
      ((theJob->JobStatus & PrintJobStatus::Printed) == PrintJobStatus::Printed))
   {
      Console::WriteLine("The job has finished. Have user recheck all output bins and be sure the correct printer is being checked.");
   }
   if (((theJob->JobStatus & PrintJobStatus::Deleted) == PrintJobStatus::Deleted)
      || 
      ((theJob->JobStatus & PrintJobStatus::Deleting) == PrintJobStatus::Deleting))
   {
      Console::WriteLine("The user or someone with administration rights to the queue has deleted the job. It must be resubmitted.");
   }
   if ((theJob->JobStatus & PrintJobStatus::Error) == PrintJobStatus::Error)
   {
      Console::WriteLine("The job has errored.");
   }
   if ((theJob->JobStatus & PrintJobStatus::Offline) == PrintJobStatus::Offline)
   {
      Console::WriteLine("The printer is offline. Have user put it online with printer front panel.");
   }
   if ((theJob->JobStatus & PrintJobStatus::PaperOut) == PrintJobStatus::PaperOut)
   {
      Console::WriteLine("The printer is out of paper of the size required by the job. Have user add paper.");
   }
   if (((theJob->JobStatus & PrintJobStatus::Paused) == PrintJobStatus::Paused)
      || 
      ((theJob->HostingPrintQueue->QueueStatus & PrintQueueStatus::Paused) == PrintQueueStatus::Paused))
   {
      HandlePausedJob(theJob);
      //HandlePausedJob is defined in the complete example.
   }

   if ((theJob->JobStatus & PrintJobStatus::Printing) == PrintJobStatus::Printing)
   {
      Console::WriteLine("The job is printing now.");
   }
   if ((theJob->JobStatus & PrintJobStatus::Spooling) == PrintJobStatus::Spooling)
   {
      Console::WriteLine("The job is spooling now.");
   }
   if ((theJob->JobStatus & PrintJobStatus::UserIntervention) == PrintJobStatus::UserIntervention)
   {
      Console::WriteLine("The printer needs human intervention.");
   }
};

// Check for possible trouble states of a print job using the flags of the JobStatus property
internal static void SpotTroubleUsingJobAttributes(PrintSystemJobInfo theJob)
{
    if ((theJob.JobStatus & PrintJobStatus.Blocked) == PrintJobStatus.Blocked)
    {
        Console.WriteLine("The job is blocked.");
    }
    if (((theJob.JobStatus & PrintJobStatus.Completed) == PrintJobStatus.Completed)
        ||
        ((theJob.JobStatus & PrintJobStatus.Printed) == PrintJobStatus.Printed))
    {
        Console.WriteLine("The job has finished. Have user recheck all output bins and be sure the correct printer is being checked.");
    }
    if (((theJob.JobStatus & PrintJobStatus.Deleted) == PrintJobStatus.Deleted)
        ||
        ((theJob.JobStatus & PrintJobStatus.Deleting) == PrintJobStatus.Deleting))
    {
        Console.WriteLine("The user or someone with administration rights to the queue has deleted the job. It must be resubmitted.");
    }
    if ((theJob.JobStatus & PrintJobStatus.Error) == PrintJobStatus.Error)
    {
        Console.WriteLine("The job has errored.");
    }
    if ((theJob.JobStatus & PrintJobStatus.Offline) == PrintJobStatus.Offline)
    {
        Console.WriteLine("The printer is offline. Have user put it online with printer front panel.");
    }
    if ((theJob.JobStatus & PrintJobStatus.PaperOut) == PrintJobStatus.PaperOut)
    {
        Console.WriteLine("The printer is out of paper of the size required by the job. Have user add paper.");
    }

    if (((theJob.JobStatus & PrintJobStatus.Paused) == PrintJobStatus.Paused)
        ||
        ((theJob.HostingPrintQueue.QueueStatus & PrintQueueStatus.Paused) == PrintQueueStatus.Paused))
    {
        HandlePausedJob(theJob);
        //HandlePausedJob is defined in the complete example.
    }

    if ((theJob.JobStatus & PrintJobStatus.Printing) == PrintJobStatus.Printing)
    {
        Console.WriteLine("The job is printing now.");
    }
    if ((theJob.JobStatus & PrintJobStatus.Spooling) == PrintJobStatus.Spooling)
    {
        Console.WriteLine("The job is spooling now.");
    }
    if ((theJob.JobStatus & PrintJobStatus.UserIntervention) == PrintJobStatus.UserIntervention)
    {
        Console.WriteLine("The printer needs human intervention.");
    }
}//end SpotTroubleUsingJobAttributes

' Check for possible trouble states of a print job using the flags of the JobStatus property
Friend Shared Sub SpotTroubleUsingJobAttributes(ByVal theJob As PrintSystemJobInfo)
    If (theJob.JobStatus And PrintJobStatus.Blocked) = PrintJobStatus.Blocked Then
        Console.WriteLine("The job is blocked.")
    End If
    If ((theJob.JobStatus And PrintJobStatus.Completed) = PrintJobStatus.Completed) OrElse ((theJob.JobStatus And PrintJobStatus.Printed) = PrintJobStatus.Printed) Then
        Console.WriteLine("The job has finished. Have user recheck all output bins and be sure the correct printer is being checked.")
    End If
    If ((theJob.JobStatus And PrintJobStatus.Deleted) = PrintJobStatus.Deleted) OrElse ((theJob.JobStatus And PrintJobStatus.Deleting) = PrintJobStatus.Deleting) Then
        Console.WriteLine("The user or someone with administration rights to the queue has deleted the job. It must be resubmitted.")
    End If
    If (theJob.JobStatus And PrintJobStatus.Error) = PrintJobStatus.Error Then
        Console.WriteLine("The job has errored.")
    End If
    If (theJob.JobStatus And PrintJobStatus.Offline) = PrintJobStatus.Offline Then
        Console.WriteLine("The printer is offline. Have user put it online with printer front panel.")
    End If
    If (theJob.JobStatus And PrintJobStatus.PaperOut) = PrintJobStatus.PaperOut Then
        Console.WriteLine("The printer is out of paper of the size required by the job. Have user add paper.")
    End If

    If ((theJob.JobStatus And PrintJobStatus.Paused) = PrintJobStatus.Paused) OrElse ((theJob.HostingPrintQueue.QueueStatus And PrintQueueStatus.Paused) = PrintQueueStatus.Paused) Then
        HandlePausedJob(theJob)
        'HandlePausedJob is defined in the complete example.
    End If

    If (theJob.JobStatus And PrintJobStatus.Printing) = PrintJobStatus.Printing Then
        Console.WriteLine("The job is printing now.")
    End If
    If (theJob.JobStatus And PrintJobStatus.Spooling) = PrintJobStatus.Spooling Then
        Console.WriteLine("The job is spooling now.")
    End If
    If (theJob.JobStatus And PrintJobStatus.UserIntervention) = PrintJobStatus.UserIntervention Then
        Console.WriteLine("The printer needs human intervention.")
    End If

End Sub

Para verificar o estado do trabalho de impressão usando propriedades separadas, basta ler cada propriedade e, se a propriedade for true, relatar no ecrã do console e, possivelmente, sugerir uma forma de responder. (O método HandlePausedJob que é chamado se o trabalho ou a fila for pausado é discutido abaixo.)

// Check for possible trouble states of a print job using its properties
static void SpotTroubleUsingProperties (PrintSystemJobInfo^ theJob) 
{
   if (theJob->IsBlocked)
   {
      Console::WriteLine("The job is blocked.");
   }
   if (theJob->IsCompleted || theJob->IsPrinted)
   {
      Console::WriteLine("The job has finished. Have user recheck all output bins and be sure the correct printer is being checked.");
   }
   if (theJob->IsDeleted || theJob->IsDeleting)
   {
      Console::WriteLine("The user or someone with administration rights to the queue has deleted the job. It must be resubmitted.");
   }
   if (theJob->IsInError)
   {
      Console::WriteLine("The job has errored.");
   }
   if (theJob->IsOffline)
   {
      Console::WriteLine("The printer is offline. Have user put it online with printer front panel.");
   }
   if (theJob->IsPaperOut)
   {
      Console::WriteLine("The printer is out of paper of the size required by the job. Have user add paper.");
   }

   if (theJob->IsPaused || theJob->HostingPrintQueue->IsPaused)
   {
      HandlePausedJob(theJob);
      //HandlePausedJob is defined in the complete example.
   }

   if (theJob->IsPrinting)
   {
      Console::WriteLine("The job is printing now.");
   }
   if (theJob->IsSpooling)
   {
      Console::WriteLine("The job is spooling now.");
   }
   if (theJob->IsUserInterventionRequired)
   {
      Console::WriteLine("The printer needs human intervention.");
   }
};

// Check for possible trouble states of a print job using its properties
internal static void SpotTroubleUsingProperties(PrintSystemJobInfo theJob)
{
    if (theJob.IsBlocked)
    {
        Console.WriteLine("The job is blocked.");
    }
    if (theJob.IsCompleted || theJob.IsPrinted)
    {
        Console.WriteLine("The job has finished. Have user recheck all output bins and be sure the correct printer is being checked.");
    }
    if (theJob.IsDeleted || theJob.IsDeleting)
    {
        Console.WriteLine("The user or someone with administration rights to the queue has deleted the job. It must be resubmitted.");
    }
    if (theJob.IsInError)
    {
        Console.WriteLine("The job has errored.");
    }
    if (theJob.IsOffline)
    {
        Console.WriteLine("The printer is offline. Have user put it online with printer front panel.");
    }
    if (theJob.IsPaperOut)
    {
        Console.WriteLine("The printer is out of paper of the size required by the job. Have user add paper.");
    }

    if (theJob.IsPaused || theJob.HostingPrintQueue.IsPaused)
    {
        HandlePausedJob(theJob);
        //HandlePausedJob is defined in the complete example.
    }

    if (theJob.IsPrinting)
    {
        Console.WriteLine("The job is printing now.");
    }
    if (theJob.IsSpooling)
    {
        Console.WriteLine("The job is spooling now.");
    }
    if (theJob.IsUserInterventionRequired)
    {
        Console.WriteLine("The printer needs human intervention.");
    }
}//end SpotTroubleUsingProperties

' Check for possible trouble states of a print job using its properties
Friend Shared Sub SpotTroubleUsingProperties(ByVal theJob As PrintSystemJobInfo)
    If theJob.IsBlocked Then
        Console.WriteLine("The job is blocked.")
    End If
    If theJob.IsCompleted OrElse theJob.IsPrinted Then
        Console.WriteLine("The job has finished. Have user recheck all output bins and be sure the correct printer is being checked.")
    End If
    If theJob.IsDeleted OrElse theJob.IsDeleting Then
        Console.WriteLine("The user or someone with administration rights to the queue has deleted the job. It must be resubmitted.")
    End If
    If theJob.IsInError Then
        Console.WriteLine("The job has errored.")
    End If
    If theJob.IsOffline Then
        Console.WriteLine("The printer is offline. Have user put it online with printer front panel.")
    End If
    If theJob.IsPaperOut Then
        Console.WriteLine("The printer is out of paper of the size required by the job. Have user add paper.")
    End If

    If theJob.IsPaused OrElse theJob.HostingPrintQueue.IsPaused Then
        HandlePausedJob(theJob)
        'HandlePausedJob is defined in the complete example.
    End If

    If theJob.IsPrinting Then
        Console.WriteLine("The job is printing now.")
    End If
    If theJob.IsSpooling Then
        Console.WriteLine("The job is spooling now.")
    End If
    If theJob.IsUserInterventionRequired Then
        Console.WriteLine("The printer needs human intervention.")
    End If

End Sub

O método HandlePausedJob permite que o usuário do aplicativo retome remotamente trabalhos pausados. Como pode haver um bom motivo pelo qual a fila de impressão foi pausada, o método começa solicitando uma decisão do usuário sobre retomá-la. Se a resposta for "Y", então o método PrintQueue.Resume é chamado.

Em seguida, o usuário é solicitado a decidir se o trabalho em si deve ser retomado, caso ele seja pausado independentemente da fila de impressão. (Compare PrintQueue.IsPaused e PrintSystemJobInfo.IsPaused.) Se a resposta for "Y", então PrintSystemJobInfo.Resume será chamado; caso contrário, Cancel será chamado.

static void HandlePausedJob (PrintSystemJobInfo^ theJob) 
{
   // If there's no good reason for the queue to be paused, resume it and 
   // give user choice to resume or cancel the job.
   Console::WriteLine("The user or someone with administrative rights to the queue" + "\nhas paused the job or queue." + "\nResume the queue? (Has no effect if queue is not paused.)" + "\nEnter \"Y\" to resume, otherwise press return: ");
   String^ resume = Console::ReadLine();
   if (resume == "Y")
   {
      theJob->HostingPrintQueue->Resume();

      // It is possible the job is also paused. Find out how the user wants to handle that.
      Console::WriteLine("Does user want to resume print job or cancel it?" + "\nEnter \"Y\" to resume (any other key cancels the print job): ");
      String^ userDecision = Console::ReadLine();
      if (userDecision == "Y")
      {
         theJob->Resume();
      } else
      {
         theJob->Cancel();
      }
   }
};

internal static void HandlePausedJob(PrintSystemJobInfo theJob)
{
    // If there's no good reason for the queue to be paused, resume it and
    // give user choice to resume or cancel the job.
    Console.WriteLine("The user or someone with administrative rights to the queue" +
         "\nhas paused the job or queue." +
         "\nResume the queue? (Has no effect if queue is not paused.)" +
         "\nEnter \"Y\" to resume, otherwise press return: ");
    String resume = Console.ReadLine();
    if (resume == "Y")
    {
        theJob.HostingPrintQueue.Resume();

        // It is possible the job is also paused. Find out how the user wants to handle that.
        Console.WriteLine("Does user want to resume print job or cancel it?" +
            "\nEnter \"Y\" to resume (any other key cancels the print job): ");
        String userDecision = Console.ReadLine();
        if (userDecision == "Y")
        {
            theJob.Resume();
        }
        else
        {
            theJob.Cancel();
        }
    }//end if the queue should be resumed
}//end HandlePausedJob

Friend Shared Sub HandlePausedJob(ByVal theJob As PrintSystemJobInfo)
    ' If there's no good reason for the queue to be paused, resume it and 
    ' give user choice to resume or cancel the job.
    Console.WriteLine("The user or someone with administrative rights to the queue" & vbLf & "has paused the job or queue." & vbLf & "Resume the queue? (Has no effect if queue is not paused.)" & vbLf & "Enter ""Y"" to resume, otherwise press return: ")
    Dim [resume] As String = Console.ReadLine()
    If [resume] = "Y" Then
        theJob.HostingPrintQueue.Resume()

        ' It is possible the job is also paused. Find out how the user wants to handle that.
        Console.WriteLine("Does user want to resume print job or cancel it?" & vbLf & "Enter ""Y"" to resume (any other key cancels the print job): ")
        Dim userDecision As String = Console.ReadLine()
        If userDecision = "Y" Then
            theJob.Resume()
        Else
            theJob.Cancel()
        End If
    End If 'end if the queue should be resumed

End Sub

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Como: Diagnosticar trabalho de impressão problemático

Exemplo

Ver também

Recursos adicionais