C# EventLog获取Windows日志进行查询设置多个EventLogQuery查询条件

Trustport2025-04-06 19:23

cs 复制代码

public void initMonitorEventLog()
{
    EventLogSession session = new EventLogSession();
    EventLogQuery query = new EventLogQuery("Security", PathType.LogName,   "*[System/EventID=4663]") 
    {
        TolerateQueryErrors = true,
        Session = session
    };

    EventLogWatcher logWatcher = new EventLogWatcher(query);

    logWatcher.EventRecordWritten += new    EventHandler<EventRecordWrittenEventArgs>(LogWatcher_EventRecordWritten);

    try
    {
        logWatcher.Enabled = true;
    }
    catch (EventLogException ex)
    {
        Console.WriteLine(ex.Message);
        Console.ReadLine();
    }    
}

cs 复制代码

private void LogWatcher_EventRecordWritten(object sender, EventRecordWrittenEventArgs e)
{
    EventRecord eventRecord = e.EventRecord;
    var time = e.EventRecord.TimeCreated;
    var id = e.EventRecord.Id;
    var logname = e.EventRecord.LogName;
    var level = e.EventRecord.Level;
    var task = e.EventRecord.TaskDisplayName;
    var opCode = e.EventRecord.OpcodeDisplayName;
    var machineName = e.EventRecord.MachineName;
    string providerName = eventRecord.ProviderName;
    eventRecord.ToXml();
    Console.WriteLine(eventRecord.FormatDescription());
    //Console.WriteLine($@"{time}, {id}, {logname}, {level}, {task}, {opCode}, {machineName},{providerName}");
}

其中，EventLogQuery构造函数的第三个参数是Windows日志的查询筛选条件。我在网上查想要筛选监视多个EventID的情况，按照XPath的语法写，一直都没办法写对。后面受到外国博主的启发，在下图的Windows日志里面设置筛选条件，然后切换XML的视图，能看到自动生成的查询条件，复制到代码里就行了。

cs 复制代码

*[System[(EventID=4663 or EventID=5142 or EventID=5144)]]

就是这个条件，复制到代码里就搞定了。