.NET Framework持續寫入txt

 /// <summary>
        /// 寫入txt
        /// </summary>
        /// <param name="path">路徑</param>
        /// <param name="body">內容</param>
        private static void txtWrite(string path, string body)
        {
            using (StreamWriter txt = new StreamWriter(path, true, Encoding.Default))
            {
                txt.Flush();
                txt.WriteLine(@"
日期時間:{0}
發送狀態:{1}
----------------->", DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss.fff"), body);
                txt.Close();
            }
        }