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        public void WriteToFileThreadSafe(string text, string fileName)
        {
            string path = ApplicationDirectory + "/" + fileName;
            _readWriteLock.EnterWriteLock();
            try
            {
                if (File.Exists(path))
                {
                    using (StreamWriter sw = File.AppendText(path))
                    {
                        sw.WriteLine(text);
                        sw.Close();
                    }
                }
            }
            finally
            {
                _readWriteLock.ExitWriteLock();
            }
        }

        public void ClearTextFile(string fileName)
        {
            string path = ApplicationDirectory + "/" + fileName;
            _readWriteLock.EnterWriteLock();
            try
            {
                using (FileStream sw = File.Create(path))
                {
                    sw.Close();
                }
            }
            finally
            {
                _readWriteLock.ExitWriteLock();
            }
        }