文件的读操作

   static void Main(string[] args)

        {

            string path = "";

            Console.WriteLine("请输入要读取的文件的文件名，包括路径");

            path = Console.ReadLine();

            if (!File.Exists(path))

            {

                Console.WriteLine("文件不存在");

                return;

            }

            try

            {

                FileStream file = new FileStream(path, FileMode.Open);

                byte[] bt = new byte[file.Length];

                file.Read(bt, 0, bt.Length);

                string str = Encoding.Default.GetString(bt);

                Console.WriteLine(str);

                Console.ReadLine();

            }

            catch (System.Exception e)

            {

                Console.WriteLine("读取文件出错");

            }

        }

 

文件的写操作：

       static void Main(string[] args)

        {

            //FileStream fs1 = File.Create("test1");

            //fs1.Close();

            //Console.ReadLine();

            string path = "";

            string content = "";

            Console.WriteLine("请输入要保存的文件的文件名，包括路径");

            path = Console.ReadLine();

            Console.WriteLine("请输入要保存的内容 ");

            content = Console.ReadLine();

            try

            {

                FileStream file = new FileStream(path, FileMode.Create);

                byte[] bt = Encoding.UTF8.GetBytes(content);

                file.Write(bt, 0, bt.Length);

                file.Flush();

            }

            catch (System.Exception e)

            {

                Console.WriteLine("创建或写入文件时出错");

             

            }

 

 // 读取文件流

     static void Main(string[] args)

        {

            Console.WriteLine("请输入要读取文件的文件名，包括路径");

            string path = Console.ReadLine();

            if (!File.Exists(path))

            {

                Console.WriteLine("文件不存在");

                return;

            }

            FileStream readStream = new FileStream(path, FileMode.Open);

            BufferedStream readBuffered = new BufferedStream(readStream);

            byte[] bt = new byte[readBuffered.Length];

            readBuffered.Read(bt, 0, (int)readBuffered.Length);

            Console.WriteLine(Encoding.Default.GetString(bt));

            readBuffered.Close();

            Console.ReadLine();

        }