Need help finding memory leak [Answered]

Public Class ScreenText Implements System.Collections.IEnumerable
    Private logger As ILogger = New LoggerFactory().CreateLoggerNlog("Admin_" + DateTime.Now.ToString("yyyyMMdd"))
    ...
    ...

public class LoggerFactory : ILoggerFactory
{
    public ILogger CreateLoggerNlog(string categoryName)
    {
        this.AddNLog(new NLog.LogFactory());
        Logger logger;
        lock (_sync)
        {
            if (!_loggers.TryGetValue(categoryName, out logger))
            {
                logger = new Logger(this, categoryName);
                _loggers[categoryName] = logger;
            }
        }
        return logger;
    }
    .....
}

public static class NLogLoggerFactoryExtensions
{
    public static ILoggerFactory AddNLog(
        this ILoggerFactory factory,
        global::NLog.LogFactory logFactory)
    {
        factory.AddProvider(new NLogLoggerProvider(logFactory));
        return factory;
    }
}

public class NLogLoggerProvider : ILoggerProvider
{
    private readonly LogFactory _logFactory;

    public NLogLoggerProvider(LogFactory logFactory)
    {
        _logFactory = logFactory;
    }
    ....
}