XpsDocumentWriter.WritingPrintTicketRequired Evento

Definición

Se produce justo antes de que un método Write o WriteAsync agregue un PrintTicket a un documento o una cola de impresión.Occurs just before a Write or WriteAsync method adds a PrintTicket to a document or print queue.

public:
 override event System::Windows::Documents::Serialization::WritingPrintTicketRequiredEventHandler ^ WritingPrintTicketRequired;
public override event System.Windows.Documents.Serialization.WritingPrintTicketRequiredEventHandler WritingPrintTicketRequired;
member this.WritingPrintTicketRequired : System.Windows.Documents.Serialization.WritingPrintTicketRequiredEventHandler 
Public Overrides Custom Event WritingPrintTicketRequired As WritingPrintTicketRequiredEventHandler 

Tipo de evento

WritingPrintTicketRequiredEventHandler

Ejemplos

En el siguiente ejemplo se muestra cómo utilizar el evento WritingPrintTicketRequired.The following example shows how to use the WritingPrintTicketRequired event.


// ---------------- PrintMultipleFixedContentDocuments ----------------
/// <summary>
///   Prints the content of a multiple fixed document sequence.</summary>
/// <param name="pq">
///   The print queue to print to.</param>
/// <param name="async">
///   true to print asynchronously; false to print synchronously.</param>
public void PrintMultipleFixedContentDocuments(PrintQueue pq, bool async)
{
    // Create a multiple document FixedDocumentSequence.
    FixedDocumentSequence fds =
        _wpfContent.LoadFixedDocumentSequenceFromDocument();

    // Create a document writer to print to.
    XpsDocumentWriter xdwPrint = GetPrintXpsDocumentWriter(pq);

    // Set the event handler for creating print tickets for
    // each document within the fixed document sequence.
    xdwPrint.WritingPrintTicketRequired +=
        new WritingPrintTicketRequiredEventHandler(
            MultipleFixedContentDocuments_WritingPrintTicketRequired);
    _firstDocumentPrintTicket = 0;

    // Print either asynchronously or synchronously.
    if (async)
        PrintMultipleFixedContentDocumentsAsync(xdwPrint, fds);
    else
        PrintMultipleFixedContentDocuments(xdwPrint, fds);
}// end:PrintMultipleFixedContentDocuments()


' ---------------- PrintMultipleFixedContentDocuments ----------------
''' <summary>
'''   Prints the content of a multiple fixed document sequence.</summary>
''' <param name="pq">
'''   The print queue to print to.</param>
''' <param name="async">
'''   true to print asynchronously; false to print synchronously.</param>
Public Sub PrintMultipleFixedContentDocuments(ByVal pq As PrintQueue, ByVal async As Boolean)
    ' Create a multiple document FixedDocumentSequence.
    Dim fds As FixedDocumentSequence = _wpfContent.LoadFixedDocumentSequenceFromDocument()

    ' Create a document writer to print to.
    Dim xdwPrint As XpsDocumentWriter = GetPrintXpsDocumentWriter(pq)

    ' Set the event handler for creating print tickets for
    ' each document within the fixed document sequence.
    AddHandler xdwPrint.WritingPrintTicketRequired, AddressOf MultipleFixedContentDocuments_WritingPrintTicketRequired
    _firstDocumentPrintTicket = 0

    ' Print either asynchronously or synchronously.
    If async Then
        PrintMultipleFixedContentDocumentsAsync(xdwPrint, fds)
    Else
        PrintMultipleFixedContentDocuments(xdwPrint, fds)
    End If
End Sub

El controlador de eventos se crea en el ejemplo siguiente.The event handler is created in the following example.


// ----- MultipleFixedContentDocuments_WritingPrintTicketRequired -----
/// <summary>
///   Creates a PrintTicket event handler for
///   printing a FixedDocumentSequence.</summary>
private void MultipleFixedContentDocuments_WritingPrintTicketRequired(
                Object sender, WritingPrintTicketRequiredEventArgs e)
{
    if (e.CurrentPrintTicketLevel ==
            PrintTicketLevel.FixedDocumentSequencePrintTicket)
    {
        // Create a PrintTicket for the FixedDocumentSequence. Any
        // PrintTicket setting specified at the FixedDocumentSequence
        // level will be inherited by lower level (i.e. FixedDocument or
        // FixedPage) unless there exists lower level PrintTicket that
        // sets the setting differently, in which case the lower level
        // PrintTicket setting will override the higher level setting.
        PrintTicket ptFDS = new PrintTicket();
        ptFDS.PageOrientation = PageOrientation.Portrait;
        ptFDS.Duplexing = Duplexing.TwoSidedLongEdge;
        e.CurrentPrintTicket = ptFDS;
    }

    else if (e.CurrentPrintTicketLevel ==
        PrintTicketLevel.FixedDocumentPrintTicket)
    {
        // Use different PrintTickets for different FixedDocuments.
        PrintTicket ptFD = new PrintTicket();

        if (_firstDocumentPrintTicket <= 1)
        {   // Print the first document in black/white and in portrait
            // orientation.  Since the PrintTicket at the
            // FixedDocumentSequence level already specifies portrait
            // orientation, this FixedDocument can just inherit that
            // setting without having to set it again.
            ptFD.PageOrientation = PageOrientation.Portrait;
            ptFD.OutputColor = OutputColor.Monochrome;
            _firstDocumentPrintTicket++;
        }

        else // if (_firstDocumentPrintTicket > 1)
        {   // Print the second document in color and in landscape
            // orientation.  Since the PrintTicket at the
            // FixedDocumentSequence level already specifies portrait
            // orientation, this FixedDocument needs to set its
            // PrintTicket with landscape orientation in order to
            // override the higher level setting.
            ptFD.PageOrientation = PageOrientation.Landscape;
            ptFD.OutputColor = OutputColor.Color;
        }

        e.CurrentPrintTicket = ptFD;
    }// end:else if (CurrentPrintTicketLevel==FixedDocumentPrintTicket)

    // Even though we don't show code for specifying PrintTicket for
    // the FixedPage level, the same inheritance-override logic applies
    // to FixedPage as well.
}// end:MultipleFixedContentDocuments_WritingPrintTicketRequired()


' ----- MultipleFixedContentDocuments_WritingPrintTicketRequired -----
''' <summary>
'''   Creates a PrintTicket event handler for
'''   printing a FixedDocumentSequence.</summary>
Private Sub MultipleFixedContentDocuments_WritingPrintTicketRequired(ByVal sender As Object, ByVal e As WritingPrintTicketRequiredEventArgs)
    If e.CurrentPrintTicketLevel = PrintTicketLevel.FixedDocumentSequencePrintTicket Then
        ' Create a PrintTicket for the FixedDocumentSequence. Any
        ' PrintTicket setting specified at the FixedDocumentSequence
        ' level will be inherited by lower level (i.e. FixedDocument or
        ' FixedPage) unless there exists lower level PrintTicket that
        ' sets the setting differently, in which case the lower level
        ' PrintTicket setting will override the higher level setting.
        Dim ptFDS As New PrintTicket()
        ptFDS.PageOrientation = PageOrientation.Portrait
        ptFDS.Duplexing = Duplexing.TwoSidedLongEdge
        e.CurrentPrintTicket = ptFDS

    ElseIf e.CurrentPrintTicketLevel = PrintTicketLevel.FixedDocumentPrintTicket Then
        ' Use different PrintTickets for different FixedDocuments.
        Dim ptFD As New PrintTicket()

        If _firstDocumentPrintTicket <= 1 Then
            ' orientation.  Since the PrintTicket at the
            ' FixedDocumentSequence level already specifies portrait
            ' orientation, this FixedDocument can just inherit that
            ' setting without having to set it again.
            ptFD.PageOrientation = PageOrientation.Portrait
            ptFD.OutputColor = OutputColor.Monochrome
            _firstDocumentPrintTicket += 1

        Else ' if (_firstDocumentPrintTicket > 1)
            ' orientation.  Since the PrintTicket at the
            ' FixedDocumentSequence level already specifies portrait
            ' orientation, this FixedDocument needs to set its
            ' PrintTicket with landscape orientation in order to
            ' override the higher level setting.
            ptFD.PageOrientation = PageOrientation.Landscape
            ptFD.OutputColor = OutputColor.Color
        End If

        e.CurrentPrintTicket = ptFD
    End If ' end:else if (CurrentPrintTicketLevel==FixedDocumentPrintTicket)

    ' Even though we don't show code for specifying PrintTicket for
    ' the FixedPage level, the same inheritance-override logic applies
    ' to FixedPage as well.

End Sub

Comentarios

WritingPrintTicketRequired permite que un controlador de eventos reemplace un nuevo PrintTicket para el que se pasa a la operación de escritura.WritingPrintTicketRequired enables an event handler to substitute a new PrintTicket for the one that is passed to the write operation.

Los cuatro Write métodos y siguientes WriteAsync no llaman al WritingPrintTicketRequired evento:The following four Write and WriteAsync methods do not call the WritingPrintTicketRequired event:

Se aplica a