LogRecord 类

定义

public ref class LogRecord sealed

public sealed class LogRecord

type LogRecord = class

Public NotInheritable Class LogRecord

继承

Object

LogRecord

示例

下面的代码示例演示了此类的使用。

public:
    virtual bool AbortRecord(LogRecord^ log) override
    {

        // Check the validity of the record.
        if (log == nullptr)
        {
            return true;
        }
        array<Object^>^ record = dynamic_cast<array<Object^>^>(log->Record);
        if (record == nullptr)
        {
            return true;
        }
        if (record->Length != 2)
        {
            return true;
        }

        // Extract old account data from the record.
        String^ filename = (String^) record[0];
        int balance = (int) record[1];

        // Restore the old state of the account.
        WriteAccountBalance(filename, balance);

        return false;
    }

public override bool AbortRecord (LogRecord log)
{

    // Check the validity of the record.
    if (log == null) return(true);
    Object[] record = log.Record as Object[];
    if (record == null) return(true);
    if (record.Length != 2) return(true);

    // Extract old account data from the record.
    string filename = (string) record[0];
    int balance = (int) record[1];

    // Restore the old state of the account.
    AccountManager.WriteAccountBalance(filename, balance);

    return(false);
}

Public Overrides Function AbortRecord(ByVal log As LogRecord) As Boolean 
    
    ' Check the validity of the record.
    If log Is Nothing Then
        Return True
    End If
    Dim record As [Object]() = log.Record
    
    If record Is Nothing Then
        Return True
    End If
    If record.Length <> 2 Then
        Return True
    End If 
    ' Extract old account data from the record.
    Dim filename As String = CStr(record(0))
    Dim balance As Integer = Fix(record(1))
    
    ' Restore the old state of the account.
    AccountManager.WriteAccountBalance(filename, balance)
    
    Return False

End Function 'AbortRecord

注解

非结构化日志记录以 COM+ CrmLogRecordRead 结构的形式提供。 除了用户数据（单个 BLOB），还包含可用于调试或错误查找的其他字段。 该 Flags 字段是一个位字段，用于进一步了解此记录是否在某个时间点被遗忘，以及何时写入。 该 Sequence 字段提供日志记录的序列号。 在大多数情况下，序列号是连续的，但由于未传递到补偿资源管理器（CRM）补偿程序的内部日志记录，序列号不一定是连续的。