C#IO（二）

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;
using System.Security.AccessControl;
namespace StudyIO
{
    class Program
    {
        static void Main(string[] args)
        {
           // Directory.CreateDirectory("d:\\ss");
            //string[] strs = Directory.GetFiles("d:\\mp3");
            //foreach (string str in strs) 
            //{
            //    Console.WriteLine(str);
            //}
            string[] strs = Directory.GetFileSystemEntries("e:\\ftppublish");
            foreach(string s in strs)
            {
                if (Directory.Exists(s)) 
                {
                    string[] ss = Directory.GetFileSystemEntries(s);
                    foreach(string fs in ss)
                   {
                       Console.WriteLine(fs);
                    }
                }
            }
            
        }
        static void Test8() 
        {
            Stream streams = File.Open("D:\\1.cs", FileMode.Open);
            Stream streamw = File.Open("D:\\1.cs", FileMode.Open);
            BufferedStream stream = new BufferedStream(streamw);
            // stream.Write();
            //   stream.Read();
        }
        static void Test7() 
        {
            FileStream stream = File.Open("d:\\1.cs", FileMode.Open);
            BinaryReader reader = new BinaryReader(stream);
            byte[] buffer = new byte[1024];
            int i = 0;
            string str = "";
            while ((i = reader.Read(buffer, 0, buffer.Length)) != 0)
            {
                str += Encoding.UTF8.GetString(buffer, 0, i);
            }
            reader.Close();
            stream.Close();
            Console.WriteLine(str);
        }
        static void Test6()
        {
            //FileStream stream = File.Open("D:\\1.cs", FileMode.Append);
            //StreamWriter writer = new StreamWriter(stream);
            //writer.Write("你好");
            //writer.Close();
            // Test5();
        }
        static void Test5() 
        {
            //只是单独操作字符
            StreamReader reader = new StreamReader("d:\\1.cs",Encoding.UTF8);
            //先读
            string str = reader.ReadLine();
            while (str != null)
            {
                Console.WriteLine(str);
                str = reader.ReadLine();
            }
            reader.Close();
           
        }
        static void Test4() 
        {
            //1，读源文件
            FileStream read = File.Open(@"E:\FTPPUBLISH\学习资料\[电影天堂-www.dy2018.net]龙门飞甲.720p.HD中文字幕.rmvb", FileMode.Open);
            long count = read.Length;
            //2，写文件
            FileStream write = File.Open("d:\\23.rmvb", FileMode.OpenOrCreate);
            byte[] buffer = new byte[1024 * 1024 * 4];
            int i = 0;
            int r = 0;
            while ((i = read.Read(buffer, 0, buffer.Length)) != 0)
            {
                r = r + i;
                string s = (((double)r / count) * 100).ToString("0.00") + "%";
                Console.WriteLine(s);
                write.Write(buffer, 0, i);
            }
            write.Close();
            read.Close();
           
        }
        static void Test3() 
        {
            FileStream fs = File.Open("d:\\1.cs", FileMode.Open);
            //默认缓冲区为1024,每次从文件（文件流）读1024个字节
            byte[] buffer = new byte[1024];
            //当程序读文件的收，把读取的自己从缓冲流的第一个元素开始放。
            //已经读取的字节数，如果i=0的话，说明已经读取到末尾了，从而结束循环
            int i = 0;
            string result = "";
            while ((i = fs.Read(buffer, 0, 1024)) != 0)
            {
                Console.WriteLine(i);
                result += Encoding.UTF8.GetString(buffer, 0, i);
            }
            fs.Close();
            Console.WriteLine(result);
        }
        static void Test2() 
        {
            //写操作
           FileStream fs =  File.Open("d:\\1.cs",FileMode.Open);
            //向文件中写内容
           string str = "这是C#的IO操作";
           byte[] buffer = Encoding.UTF8.GetBytes(str);
            fs.Write(buffer,0,buffer.Length);
            fs.Close();
        }
        static void Test() 
        {
            //File.Create("d:\\1.cs");
            //File.Copy("d:\\12.mp3", "E:\\刀剑如梦.mp3");
            //File.Delete("E:\\刀剑如梦.mp3");
            //File.Move("d:\\12.mp3", "E:\\刀剑如梦.mp3");
            //  FileAttributes fa = File.GetAttributes("E:\\刀剑如梦.mp3");
            // Console.WriteLine(fa);
            //  DateTime dt = File.GetCreationTime("E:\\刀剑如梦.mp3");
            // Console.WriteLine(dt.ToString());
        }
    }
}