File类

using System;
using System.IO;
namespace _071_File类
{
    class Program
    {
        static void Main(string[] args)
        {
            //创建一个文件
            File.Create(@"C:\Users\46124\Desktop\new.txt");
            Console.WriteLine("创建成功！");
            //删除一个文件
            //File.Delete(@"C:\Users\46124\Desktop\new.txt");
            //Console.WriteLine("删除成功");
            //复制文件
            File.Copy(@"C:\Users\46124\Desktop\新建 Microsoft Word 文档.docx", @"C:\Users\46124\Desktop\new1.docx");
            Console.WriteLine("复制成功");
            Console.ReadKey();
        }
    }
}

using System;
using System.IO;
using System.Text;
namespace _073_文件读写
{
    class Program
    {
        static void Main(string[] args)
        {
            //File.ReadAllBytes()
            byte[] buffer = File.ReadAllBytes(@"jueduiyuxiandui.txt");
            string s = Encoding.UTF8.GetString(buffer);
            Console.WriteLine(s);
            Console.WriteLine("====以===上===为===读===取===内===容===");
            //File.WriteAllBytes(string path,byte []) 没有指定文件的话会创建有的则覆盖
            string s1 = "你是大傻哔";
            //需要将字符串转换成字节数组
            byte[] buffer1 = Encoding.Default.GetBytes(s1);
            File.WriteAllBytes(@"C:\Users\46124\Desktop\test111.txt",buffer1);
            Console.WriteLine("写入成功！！！！！！！！！！！！！！");
            Console.WriteLine("====以===上===为===读===取===内===容===");
            //File.ReadAllLines(string path,Encoding)
            string[] contents = File.ReadAllLines("jueduiyuxiandui.txt", Encoding.Default);
            foreach (string item in contents)
            {
                Console.WriteLine(item);
            }
            Console.WriteLine("====以===上===为===读===取===内===容===");
            //File.ReadAllText(string path,Encoding)
            string s2 = File.ReadAllText("jueduiyuxiandui.txt", Encoding.Default);
            Console.WriteLine(s);
            Console.WriteLine("====以===上===为===读===取===内===容===");
            //File.WriteAllLines(string path,string[] contents)  没有指定文件的话会创建有的则覆盖
            string[] contents1 = { "秀", "天秀", "陈独秀", "蒂花之秀" };
            File.WriteAllLines(@"C:\Users\46124\Desktop\text112.txt", contents1);
            Console.WriteLine("写入成功！！！！！！！！！！！！！！");
            //File.WriteAllText(string path,string)  没有指定文件的话会创建有的则覆盖
            string str = "秀\n天秀\n陈独秀\n蒂花之秀\n";
            File.WriteAllText(@"C:\Users\46124\Desktop\text113.txt", str);
            Console.WriteLine("写入成功！！！！！！！！！！！！！！");
            //File.AppendAllText(string path,string)   追加文字不会覆盖
            File.AppendAllText(@"C:\Users\46124\Desktop\text113.txt", "我是追加的文字");
            Console.WriteLine("追加成功！！！！！！！！！！！！！！");
            Console.ReadKey();
        }
    }
}