C# 写入文件

        public void Write(string words)
        {

            var pathUrl = Server.MapPath("/UpFile/CamInfo");
            if (!Directory.Exists(pathUrl))
            {
                Directory.CreateDirectory(pathUrl);
            }
            var path = pathUrl + "/" + DateTime.Now.ToString("yyyyMMddHHmmss") + ".txt";
            FileStream fs = new FileStream(path, FileMode.Create);
            StreamWriter sw = new StreamWriter(fs);
            //开始写入
            sw.Write(words);
            //清空缓冲区
            sw.Flush();
            //关闭流
            sw.Close();
            fs.Close();
        }