PrintQueue.DefaultPrintTicket 属性

定义

获取或设置与此 PrintQueue 关联的默认打印机选项。Gets or sets the default printer options associated with this PrintQueue.

public:
 virtual property System::Printing::PrintTicket ^ DefaultPrintTicket { System::Printing::PrintTicket ^ get(); void set(System::Printing::PrintTicket ^ value); };
[get: System.Security.SecurityCritical]
public virtual System.Printing.PrintTicket DefaultPrintTicket { get; set; }
member this.DefaultPrintTicket : System.Printing.PrintTicket with get, set
Public Overridable Property DefaultPrintTicket As PrintTicket

属性值

打印队列的默认 PrintTicket;或者如果打印队列中发生错误,则为 nullThe default PrintTicket for the print queue; or null if an error has occurred in the print queue.

属性

示例

下面的示例演示如何在测试打印机的功能和配置打印作业以利用它们时使用此属性。The following example shows how to use this property while testing a printer's capabilities and configuring a print job to take advantage of them.

// ---------------------- GetPrintTicketFromPrinter -----------------------
/// <summary>
///   Returns a PrintTicket based on the current default printer.</summary>
/// <returns>
///   A PrintTicket for the current local default printer.</returns>
PrintTicket^ GetPrintTicketFromPrinter () 
{
   PrintQueue^ printQueue = nullptr;

   LocalPrintServer^ localPrintServer = gcnew LocalPrintServer();

   // Retrieving collection of local printer on user machine
   PrintQueueCollection^ localPrinterCollection = localPrintServer->GetPrintQueues();

   System::Collections::IEnumerator^ localPrinterEnumerator = localPrinterCollection->GetEnumerator();

   if (localPrinterEnumerator->MoveNext())
   {
      // Get PrintQueue from first available printer
      printQueue = ((PrintQueue^)localPrinterEnumerator->Current);
   } else
   {
      return nullptr;
   }
   // Get default PrintTicket from printer
   PrintTicket^ printTicket = printQueue->DefaultPrintTicket;

   PrintCapabilities^ printCapabilites = printQueue->GetPrintCapabilities();

   // Modify PrintTicket
   if (printCapabilites->CollationCapability->Contains(Collation::Collated))
   {
      printTicket->Collation = Collation::Collated;
   }
   if (printCapabilites->DuplexingCapability->Contains(Duplexing::TwoSidedLongEdge))
   {
      printTicket->Duplexing = Duplexing::TwoSidedLongEdge;
   }
   if (printCapabilites->StaplingCapability->Contains(Stapling::StapleDualLeft))
   {
      printTicket->Stapling = Stapling::StapleDualLeft;
   }
   return printTicket;
};// end:GetPrintTicketFromPrinter()
// ---------------------- GetPrintTicketFromPrinter -----------------------
/// <summary>
///   Returns a PrintTicket based on the current default printer.</summary>
/// <returns>
///   A PrintTicket for the current local default printer.</returns>
private PrintTicket GetPrintTicketFromPrinter()
{
    PrintQueue printQueue = null;

    LocalPrintServer localPrintServer = new LocalPrintServer();

    // Retrieving collection of local printer on user machine
    PrintQueueCollection localPrinterCollection =
        localPrintServer.GetPrintQueues();

    System.Collections.IEnumerator localPrinterEnumerator =
        localPrinterCollection.GetEnumerator();

    if (localPrinterEnumerator.MoveNext())
    {
        // Get PrintQueue from first available printer
        printQueue = (PrintQueue)localPrinterEnumerator.Current;
    }
    else
    {
        // No printer exist, return null PrintTicket
        return null;
    }

    // Get default PrintTicket from printer
    PrintTicket printTicket = printQueue.DefaultPrintTicket;

    PrintCapabilities printCapabilites = printQueue.GetPrintCapabilities();

    // Modify PrintTicket
    if (printCapabilites.CollationCapability.Contains(Collation.Collated))
    {
        printTicket.Collation = Collation.Collated;
    }

    if ( printCapabilites.DuplexingCapability.Contains(
            Duplexing.TwoSidedLongEdge) )
    {
        printTicket.Duplexing = Duplexing.TwoSidedLongEdge;
    }

    if (printCapabilites.StaplingCapability.Contains(Stapling.StapleDualLeft))
    {
        printTicket.Stapling = Stapling.StapleDualLeft;
    }

    return printTicket;
}// end:GetPrintTicketFromPrinter()
' ---------------------- GetPrintTicketFromPrinter -----------------------
''' <summary>
'''   Returns a PrintTicket based on the current default printer.</summary>
''' <returns>
'''   A PrintTicket for the current local default printer.</returns>
Private Function GetPrintTicketFromPrinter() As PrintTicket
    Dim printQueue As PrintQueue = Nothing

    Dim localPrintServer As New LocalPrintServer()

    ' Retrieving collection of local printer on user machine
    Dim localPrinterCollection As PrintQueueCollection = localPrintServer.GetPrintQueues()

    Dim localPrinterEnumerator As System.Collections.IEnumerator = localPrinterCollection.GetEnumerator()

    If localPrinterEnumerator.MoveNext() Then
        ' Get PrintQueue from first available printer
        printQueue = CType(localPrinterEnumerator.Current, PrintQueue)
    Else
        ' No printer exist, return null PrintTicket
        Return Nothing
    End If

    ' Get default PrintTicket from printer
    Dim printTicket As PrintTicket = printQueue.DefaultPrintTicket

    Dim printCapabilites As PrintCapabilities = printQueue.GetPrintCapabilities()

    ' Modify PrintTicket
    If printCapabilites.CollationCapability.Contains(Collation.Collated) Then
        printTicket.Collation = Collation.Collated
    End If

    If printCapabilites.DuplexingCapability.Contains(Duplexing.TwoSidedLongEdge) Then
        printTicket.Duplexing = Duplexing.TwoSidedLongEdge
    End If

    If printCapabilites.StaplingCapability.Contains(Stapling.StapleDualLeft) Then
        printTicket.Stapling = Stapling.StapleDualLeft
    End If

    Return printTicket
End Function ' end:GetPrintTicketFromPrinter()

注解

默认 PrintTicket 指定打印作业选项,如 CopyCountPageOrientationDuplexingStapling和其他。The default PrintTicket specifies print job options such as CopyCount, PageOrientation, Duplexing, Stapling, and others.

每个 PrintQueue 维护自己的 DefaultPrintTicketEach PrintQueue maintains its own DefaultPrintTicket.

在正常操作中,DefaultPrintTicket 属性返回一个 PrintTicketIn normal operation the DefaultPrintTicket property returns a PrintTicket. 如果 PrintQueue 检测到无效状态,DefaultPrintTicket 返回 nullIf the PrintQueue detects an invalid state, DefaultPrintTicket returns null. 如果 DefaultPrintTicket 返回 null,则应用程序应显示一个信息性用户对话框,该对话框显示了此打印队列中的错误,并且应重新启动打印作业并将输出定向到其他打印队列。If DefaultPrintTicket returns null, the application should display an informational user dialog that an error has occurred on this print queue and that the print job should be restarted with the output directed to a different print queue.

获取或设置 DefaultPrintTicket 属性不会验证 PrintTicketGetting or setting the DefaultPrintTicket property does not validate the PrintTicket. MergeAndValidatePrintTicket 方法可用于验证 PrintTicketThe MergeAndValidatePrintTicket method can be used to validate a PrintTicket.

适用于

另请参阅