我操作完日志后dll就加载不上了？


    public static class ErrorCenter
    {
        private static EventLog log = new EventLog("PipeMap");
        public static void WriteInError(string ErrorMessage, string eventSource, int rowIndex)
        {            if (!EventLog.SourceExists("PipeMap"))
                EventLog.CreateEventSource(eventSource, "PipeMap");
            try
            {
                log.Source = eventSource;
                log.WriteEntry(ErrorMessage, EventLogEntryType.Warning, rowIndex);
            }
            catch (System.IO.FileNotFoundException exception)
            {
                log.WriteEntry("写入日志出错" + exception.Message, EventLogEntryType.Error);
            }        }
        public static Boolean HasWarringError(string eventSource)
        {
            List<EventLogEntry> entryList = new List<EventLogEntry>();
            foreach (EventLogEntry entry in log.Entries)
            {
                if (entry.Source == eventSource && entry.EntryType == EventLogEntryType.Warning)
                {
                    entryList.Add(entry);
                }
            }
            if (entryList.Count == 0)
            {
                return true;
            }
            else
            {
                return false;
            }
        }
        public static void DeleteError(string eventSource, int rowIndex)
        {
            foreach (EventLogEntry entry in log.Entries)
            {
                if (entry.Source == eventSource)
                {
                    if (entry.EventID == rowIndex)
                    {
                        entry.Dispose();
                    }
                }
            }        }
    }上边是我操作日志的源码，但是我把他们注释掉，还原原来的样子，我的Dll还是不能加载
Error：未能加载文件或程序集“我的Dll, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null”或它的某一个依赖项。拒绝访问。