PrintTicket Konstruktor

Definisi

Ruang nama:

System.Printing

Rakitan:

ReachFramework.dll

Menginisialisasi instans baru kelas PrintTicket.

Overload

PrintTicket()	Menginisialisasi instans baru kelas PrintTicket.
PrintTicket(Stream)	Menginisialisasi instans PrintTicket baru kelas dengan menggunakan aliran XML (yang berisi dokumen PrintTicket) yang sesuai dengan Skema Cetak XML.

PrintTicket()

Menginisialisasi instans baru kelas PrintTicket.

public:
 PrintTicket();

public PrintTicket ();

Public Sub New ()

Contoh

Contoh berikut menunjukkan cara menggunakan konstruktor ini saat menggabungkan dua tiket cetak.

/// <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

PrintTicket(Stream)

Menginisialisasi instans PrintTicket baru kelas dengan menggunakan aliran XML (yang berisi dokumen PrintTicket) yang sesuai dengan Skema Cetak 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)

Parameter

xmlStream

Stream

Aliran XML yang menjelaskan pekerjaan cetak dan sesuai dengan Skema Cetak.

Pengecualian

ArgumentNullException

xmlStreamadalah null.

FormatException

xmlStream xml tidak valid.

Keterangan

Konstruktor tidak mengatur ulang posisi baca-tulis aliran kembali ke posisi semula. Dengan demikian, Anda harus mengatur ulang segera setelah memanggil konstruktor.

Seluruh dokumen PrintTicket disimpan di bidang non-publik dalam objek, termasuk elemen XML di dalamnya yang mengekspresikan fitur yang kurang umum yang tidak diwakili oleh salah satu properti PrintTicket publik kelas. Bahkan, jika driver yang menghasilkan dokumen PrintTicket menggunakan ekstensi privat dari Skema Cetak, markup yang ditentukan secara privat juga disimpan sebagai bagian dari dokumen PrintTicket non-publik.

Bagian privat dokumen, jika ada, tidak divalidasi oleh konstruktor, tetapi semua bagian yang ditentukan Skema Cetak divalidasi, termasuk bagian yang tidak diwakili oleh salah satu properti PrintTicket publik kelas. Dengan demikian, FormatException dapat dilemparkan bahkan jika semua markup XML yang sesuai dengan properti publik valid.

Ketika salah satu properti ditulis PrintTicket ke, dokumen PrintTicket non-publik ini juga diubah.

Ini adalah dokumen PrintTicket non-publik yang dikembalikan oleh GetXmlStream metode dan SaveTo .

Lihat juga

• Cetak Skema