FileRecordSequence.BaseSequenceNumber Properti

Definisi

Ruang nama:

System.IO.Log

Rakitan:

System.IO.Log.dll

Mendapatkan nomor urut dari rekaman valid pertama di saat ini FileRecordSequence.

public:
 property System::IO::Log::SequenceNumber BaseSequenceNumber { System::IO::Log::SequenceNumber get(); };

public System.IO.Log.SequenceNumber BaseSequenceNumber { get; }

member this.BaseSequenceNumber : System.IO.Log.SequenceNumber

Public ReadOnly Property BaseSequenceNumber As SequenceNumber

Nilai Properti

SequenceNumber

Nomor urut terendah yang sesuai dengan rekaman yang valid di FileRecordSequence.

Penerapan

BaseSequenceNumber

Pengecualian

ObjectDisposedException

Properti diakses setelah urutan dibuang.

Contoh

Contoh berikut menunjukkan penggunaan BaseSequenceNumber dalam perulangan:

// Read the records added to the log.
    public void ReadRecords()
    {
        Encoding enc = Encoding.Unicode;

        Console.WriteLine();

        Console.WriteLine("Reading Log Records...");
        try
        {
            foreach (LogRecord record in this.sequence.ReadLogRecords(this.sequence.BaseSequenceNumber, LogRecordEnumeratorType.Next))
            {
                byte[] data = new byte[record.Data.Length];
                record.Data.Read(data, 0, (int)record.Data.Length);
                string mystr = enc.GetString(data);
                Console.WriteLine("    {0}", mystr);
            }
        }
        catch (Exception e)
        {
            Console.WriteLine("Exception {0} {1}", e.GetType(), e.Message);
        }

        Console.WriteLine();
    }

' Read the records added to the log. 
    Public Sub ReadRecords()
        Dim enc As Encoding = Encoding.Unicode

        Console.WriteLine()

        Console.WriteLine("Reading Log Records...")
        Try
            For Each record In Me.sequence.ReadLogRecords(Me.sequence.BaseSequenceNumber, LogRecordEnumeratorType.Next)
                Dim data(record.Data.Length - 1) As Byte
                record.Data.Read(data, 0, CInt(Fix(record.Data.Length)))
                Dim mystr As String = enc.GetString(data)
                Console.WriteLine("    {0}", mystr)
            Next record
        Catch e As Exception
            Console.WriteLine("Exception {0} {1}", e.GetType(), e.Message)
        End Try

        Console.WriteLine()
    End Sub

Keterangan

Nomor urut yang valid lebih besar dari atau sama dengan BaseSequenceNumber dan kurang dari LastSequenceNumber. Semua nomor urut lainnya tidak valid.

Nilai properti ini dapat diubah dengan memanggil WriteRestartArea metode atau AdvanceBaseSequenceNumber .