log4net - Force New (Specified) Log File

private static readonly ILog alog = LogManager.GetLogger("AlgoLogger");

public void SwitchToNewUniqueAlgoLogFile(long scheduleID)
{
        ILoggerRepository logRepos = LogManager.GetRepository();
        IAppender[] logAppenders = logRepos.GetAppenders();

        string targetAppenderName = "myAppender"

        // first find the logger we are actually looking for

        for (int i = 0; i < logAppenders.Length; i++)
        {
                IAppender appender = logAppenders[i];

                if (appender.Name == targetAppenderName )
                {
                    // cast generic appender to our type
                    RollingFileAppender rfa = appender as RollingFileAppender;
                    
                    // get full name of current log file 
                    string oldFName = rfa.File;

                    // extract path
                    int indexOfLastSlash = oldFName.LastIndexOf(@"\");
                    string path = oldFName.Substring(0, indexOfLastSlash + 1);

                    // generate new log file name
                    string newLogFileName = "newLog.txt"
                    string newFullFileName = path + newLogFileName;

                    // set new file name
                    rfa.File = newFullFileName;
                    
                    // indicate to change
                    rfa.ActivateOptions();

                    break;
                }
            }
        }