C# 写入和读取text文件

        //验证文件夹是否存在
        public string DirFilePath()
        {
            //文件上传后的保存路径
            //获取项目文件路径可参考 ： https://blog.youkuaiyun.com/oshan2012/article/details/91821229
            string filePath = Path.Combine(Application.StartupPath.ToString(),"ResultContentdir");
            if (!Directory.Exists(filePath))
                Directory.CreateDirectory(filePath);
            return filePath;
        }

       //方法1
       private static void WriterTextContent1(string path, string content)
        {
            // 直接写入： File.WriteAllText(path, content); 

            //转换byte写入         
            var strByte = Encoding.UTF8.GetBytes(content);
            File.WriteAllBytes(path, strByte);
        }

         //方法2
        private static void WriterTextContent(string path, string content)
        {
            //if (!File.Exists(path))
            //    File.Create(path).Close();

            using (FileStream fs = new FileStream(path,