PrintTicket Constructores

  • Referencia

Definición

Espacio de nombres:
System.Printing
Ensamblado:
ReachFramework.dll

Inicializa una nueva instancia de la clase PrintTicket.

Sobrecargas

PrintTicket()

Inicializa una nueva instancia de la clase PrintTicket.
PrintTicket(Stream)

Inicializa una nueva instancia de la clase PrintTicket mediante el uso de una secuencia XML (que contiene un documento PrintTicket) que cumple con el Esquema de impresión XML.

PrintTicket()

Inicializa una nueva instancia de la clase PrintTicket.

public:
 PrintTicket();
public PrintTicket ();
Public Sub New ()

Ejemplos

En el ejemplo siguiente se muestra cómo usar este constructor al combinar dos vales de impresión.

/// <summary>
/// Changes the user-default PrintTicket setting of the specified print queue.
/// </summary>
/// <param name="queue">the printer whose user-default PrintTicket setting needs to be changed</param>
static private void ChangePrintTicketSetting(PrintQueue queue)
{
    //
    // Obtain the printer's PrintCapabilities so we can determine whether or not
    // duplexing printing is supported by the printer.
    //
    PrintCapabilities printcap = queue.GetPrintCapabilities();

    //
    // The printer's duplexing capability is returned as a read-only collection of duplexing options
    // that can be supported by the printer. If the collection returned contains the duplexing
    // option we want to set, it means the duplexing option we want to set is supported by the printer,
    // so we can make the user-default PrintTicket setting change.
    //
    if (printcap.DuplexingCapability.Contains(Duplexing.TwoSidedLongEdge))
    {
        //
        // To change the user-default PrintTicket, we can first create a delta PrintTicket with
        // the new duplexing setting.
        //
        PrintTicket deltaTicket = new PrintTicket();
        deltaTicket.Duplexing = Duplexing.TwoSidedLongEdge;

        //
        // Then merge the delta PrintTicket onto the printer's current user-default PrintTicket,
        // and validate the merged PrintTicket to get the new PrintTicket we want to set as the
        // printer's new user-default PrintTicket.
        //
        ValidationResult result = queue.MergeAndValidatePrintTicket(queue.UserPrintTicket, deltaTicket);

        //
        // The duplexing option we want to set could be constrained by other PrintTicket settings
        // or device settings. We can check the validated merged PrintTicket to see whether the
        // the validation process has kept the duplexing option we want to set unchanged.
        //
        if (result.ValidatedPrintTicket.Duplexing == Duplexing.TwoSidedLongEdge)
        {
            //
            // Set the printer's user-default PrintTicket and commit the set operation.
            //
            queue.UserPrintTicket = result.ValidatedPrintTicket;
            queue.Commit();
            Console.WriteLine("PrintTicket new duplexing setting is set on '{0}'.", queue.FullName);
        }
        else
        {
            //
            // The duplexing option we want to set has been changed by the validation process
            // when it was resolving setting constraints.
            //
            Console.WriteLine("PrintTicket new duplexing setting is constrained on '{0}'.", queue.FullName);
        }
    }
    else
    {
        //
        // If the printer doesn't support the duplexing option we want to set, skip it.
        //
        Console.WriteLine("PrintTicket new duplexing setting is not supported on '{0}'.", queue.FullName);
    }
}

''' <summary>
''' Changes the user-default PrintTicket setting of the specified print queue.
''' </summary>
''' <param name="queue">the printer whose user-default PrintTicket setting needs to be changed</param>
Private Shared Sub ChangePrintTicketSetting(ByVal queue As PrintQueue)
    '
    ' Obtain the printer's PrintCapabilities so we can determine whether or not
    ' duplexing printing is supported by the printer.
    '
    Dim printcap As PrintCapabilities = queue.GetPrintCapabilities()

    '
    ' The printer's duplexing capability is returned as a read-only collection of duplexing options
    ' that can be supported by the printer. If the collection returned contains the duplexing
    ' option we want to set, it means the duplexing option we want to set is supported by the printer,
    ' so we can make the user-default PrintTicket setting change.
    '
    If printcap.DuplexingCapability.Contains(Duplexing.TwoSidedLongEdge) Then
        '
        ' To change the user-default PrintTicket, we can first create a delta PrintTicket with
        ' the new duplexing setting.
        '
        Dim deltaTicket As New PrintTicket()
        deltaTicket.Duplexing = Duplexing.TwoSidedLongEdge

        '
        ' Then merge the delta PrintTicket onto the printer's current user-default PrintTicket,
        ' and validate the merged PrintTicket to get the new PrintTicket we want to set as the
        ' printer's new user-default PrintTicket.
        '
        Dim result As ValidationResult = queue.MergeAndValidatePrintTicket(queue.UserPrintTicket, deltaTicket)

        '
        ' The duplexing option we want to set could be constrained by other PrintTicket settings
        ' or device settings. We can check the validated merged PrintTicket to see whether the
        ' the validation process has kept the duplexing option we want to set unchanged.
        '
        If result.ValidatedPrintTicket.Duplexing = Duplexing.TwoSidedLongEdge Then
            '
            ' Set the printer's user-default PrintTicket and commit the set operation.
            '
            queue.UserPrintTicket = result.ValidatedPrintTicket
            queue.Commit()
            Console.WriteLine("PrintTicket new duplexing setting is set on '{0}'.", queue.FullName)
        Else
            '
            ' The duplexing option we want to set has been changed by the validation process
            ' when it was resolving setting constraints.
            '
            Console.WriteLine("PrintTicket new duplexing setting is constrained on '{0}'.", queue.FullName)
        End If
    Else
        '
        ' If the printer doesn't support the duplexing option we want to set, skip it.
        '
        Console.WriteLine("PrintTicket new duplexing setting is not supported on '{0}'.", queue.FullName)
    End If
End Sub

Se aplica a

PrintTicket(Stream)

Inicializa una nueva instancia de la clase PrintTicket mediante el uso de una secuencia XML (que contiene un documento PrintTicket) que cumple con el Esquema de impresión XML.

public:
 PrintTicket(System::IO::Stream ^ xmlStream);
public PrintTicket (System.IO.Stream xmlStream);
new System.Printing.PrintTicket : System.IO.Stream -> System.Printing.PrintTicket
Public Sub New (xmlStream As Stream)

Parámetros

xmlStream
Stream

Secuencia XML que describe un trabajo de impresión y se ajusta al Esquema de impresión.

Excepciones

ArgumentNullException

xmlStream es null.

FormatException

xmlStream no es un XML válido.

Comentarios

El constructor no restablece la posición de lectura y escritura de la secuencia a su posición original. En consecuencia, debe restablecerlo inmediatamente después de llamar al constructor.

Todo el documento PrintTicket se almacena en un campo no público en el objeto , incluidos los elementos XML dentro de él que expresan características menos comunes que no están representadas por ninguna de las propiedades públicas de la PrintTicket clase . De hecho, si el controlador que generó el documento PrintTicket usa una extensión privada del esquema de impresión, ese marcado definido de forma privada también se almacena como parte del documento PrintTicket no público.

Las partes privadas del documento, si las hay, no las valida el constructor, pero se validan todas las partes definidas por el esquema de impresión, incluidas las partes que no están representadas por ninguna de las propiedades públicas de la PrintTicket clase. En consecuencia, FormatException se podría producir incluso si todo el marcado XML que corresponde a las propiedades públicas es válido.

Cuando se escribe en cualquiera de las propiedades de PrintTicket , este documento PrintTicket no público también se cambia.

Es este documento PrintTicket no público devuelto por los GetXmlStream métodos y SaveTo .

Consulte también

Se aplica a