PrintQueue.Refresh Metode

Definisi

Ruang nama:

System.Printing

Rakitan:

System.Printing.dll

Updates properti PrintQueue objek dengan nilai dari printer dan utilitas antrean cetak yang berjalan di komputer.

public:
 override void Refresh();

public override void Refresh ();

override this.Refresh : unit -> unit

Public Overrides Sub Refresh ()

Pengecualian

PrintSystemException

Beberapa properti tidak dapat disegarkan.

Contoh

Contoh berikut menunjukkan cara menggunakan metode ini sebagai bagian dari survei semua printer untuk kemungkinan status kesalahan.

// Survey queue status for every queue on every print server
System::String^ line;
System::String^ statusReport = "\n\nAny problem states are indicated below:\n\n";
while ((line = fileOfPrintServers->ReadLine()) != nullptr)
{
   System::Printing::PrintServer^ myPS = gcnew System::Printing::PrintServer(line, PrintSystemDesiredAccess::AdministrateServer);
   System::Printing::PrintQueueCollection^ myPrintQueues = myPS->GetPrintQueues();
   statusReport = statusReport + "\n" + line;
   for each (System::Printing::PrintQueue^ pq in myPrintQueues)
   {
      pq->Refresh();
      statusReport = statusReport + "\n\t" + pq->Name + ":";
      if (useAttributesResponse == "y")
      {
         TroubleSpotter::SpotTroubleUsingQueueAttributes(statusReport, pq);
         // TroubleSpotter class is defined in the complete example.
      } else
      {
         TroubleSpotter::SpotTroubleUsingProperties(statusReport, pq);
      }
   }
}
fileOfPrintServers->Close();
Console::WriteLine(statusReport);
Console::WriteLine("\nPress Return to continue.");
Console::ReadLine();

// Survey queue status for every queue on every print server
String line;
String statusReport = "\n\nAny problem states are indicated below:\n\n";
while ((line = fileOfPrintServers.ReadLine()) != null)
 {
     PrintServer myPS = new PrintServer(line, PrintSystemDesiredAccess.AdministrateServer);
     PrintQueueCollection myPrintQueues = myPS.GetPrintQueues();
     statusReport = statusReport + "\n" + line;
     foreach (PrintQueue pq in myPrintQueues)
     {
         pq.Refresh();
         statusReport = statusReport + "\n\t" + pq.Name + ":";
         if (useAttributesResponse == "y")
         {
             TroubleSpotter.SpotTroubleUsingQueueAttributes(ref statusReport, pq);
             // TroubleSpotter class is defined in the complete example.
         }
         else
         {
             TroubleSpotter.SpotTroubleUsingProperties(ref statusReport, pq);
         }                 
     }// end for each print queue
 }// end while list of print servers is not yet exhausted

fileOfPrintServers.Close();
Console.WriteLine(statusReport);
Console.WriteLine("\nPress Return to continue.");
Console.ReadLine();

' Survey queue status for every queue on every print server
Dim line As String
Dim statusReport As String = vbLf & vbLf & "Any problem states are indicated below:" & vbLf & vbLf
line = fileOfPrintServers.ReadLine()
Do While line IsNot Nothing
     Dim myPS As New PrintServer(line, PrintSystemDesiredAccess.AdministrateServer)
     Dim myPrintQueues As PrintQueueCollection = myPS.GetPrintQueues()
     statusReport = statusReport & vbLf & line
     For Each pq As PrintQueue In myPrintQueues
         pq.Refresh()
         statusReport = statusReport & vbLf & vbTab & pq.Name & ":"
         If useAttributesResponse = "y" Then
             TroubleSpotter.SpotTroubleUsingQueueAttributes(statusReport, pq)
             ' TroubleSpotter class is defined in the complete example.
         Else
             TroubleSpotter.SpotTroubleUsingProperties(statusReport, pq)
         End If

     Next pq ' end for each print queue

    line = fileOfPrintServers.ReadLine()
Loop ' end while list of print servers is not yet exhausted

fileOfPrintServers.Close()
Console.WriteLine(statusReport)
Console.WriteLine(vbLf & "Press Return to continue.")
Console.ReadLine()

Keterangan

Perubahan yang PrintQueue dilakukan program Anda pada properti objek akan hilang ketika Refresh dijalankan, kecuali jika telah ditulis ke pencetak dan mencetak antrean dengan Commit.

Lihat juga

• Commit()