try

{

    Type comLogQueryType = 

        Type.GetTypeFromProgID("MSUtil.LogQuery", true);

    object comLogQueryObject = 

        Activator.CreateInstance(comLogQueryType);

    // Get the IIS Input and XML output filters

    Type ws3LogType = 

        Type.GetTypeFromProgID("MSUtil.LogQuery.IISW3CInputFormat", true);

    object ws3LogObject = 

        Activator.CreateInstance(ws3LogType);

    Type xmlLogType = 

        Type.GetTypeFromProgID("MSUtil.LogQuery.XMLOutputFormat", true);

    object xmlLogObject = 

        Activator.CreateInstance(xmlLogType);

    // Setup input and output files

    string inPath = "someIISlog.log";

    string outpath = "temp.xml";

    // Create a SQL query to get the referers, count and uri-to. Order by total hits

    string query = 

        "SELECT cs(Referer) as Referer,cs-uri-stem as To,COUNT(*) as Total from " +

        inPath + " TO " + outpath +

        " WHERE (sc-status=200) AND (Referer LIKE 'http:%') GROUP BY Referer,To ORDER BY Total DESC";

    // Invoke the ExcuteBatch method

    object[] inputArgs = {query, ws3LogObject, xmlLogObject};

    comLogQueryType.InvokeMember("ExecuteBatch", BindingFlags.InvokeMethod, 

        null, comLogQueryObject, inputArgs);

}

catch (Exception e)

{

    string errorString = "An exception has occurred: " + e.Message;

    Console.WriteLine(errorString);

}

[Via Steve Makofsky ]