FileRecordSequence.BaseSequenceNumber Property
Definition
Important
Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.
Gets the sequence number of the first valid record in the current 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
Property Value
The lowest sequence number that corresponds to a valid record in the FileRecordSequence.
Implements
Exceptions
The property was accessed after the sequence has been disposed of.
Examples
The following example shows using BaseSequenceNumber in a loop:
// 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
Remarks
Valid sequence numbers are greater than or equal to BaseSequenceNumber and less than LastSequenceNumber. All other sequence numbers are invalid.
The value of this property can be changed by calling the WriteRestartArea or AdvanceBaseSequenceNumber method.
Applies to
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