黑马程序员——File笔记读,写,复制

来源：互联网发布：动态最优化课后题答案编辑：程序博客网时间：2024/06/06 00:45

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#region ReadAllBytes
byte[] buffer = File.ReadAllBytes(@"C:\Users\dell\Desktop\新建文件夹.txt");

            //将字节数组转换成字符串
            //解决乱码   GB2312 GBK   Default   UTF8
            //string str = System.Text.Encoding.UTF8.GetString(buffer);
            //Console.WriteLine(str);
            //Console.ReadKey();
            #endregion

            #region ReadAllLines
            //string[] str = File.ReadAllLines(@"C:\Users\dell\Desktop\新建文件夹.txt");
            //for (int i = 0; i < str.Length; i++)
            //{
            //    Console.WriteLine(str[i]);
            //}
            //Console.ReadKey();
            #endregion

            #region ReadAllText
            //string str = File.ReadAllText(@"C:\Users\dell\Desktop\新建文件夹.txt");
            //Console.WriteLine(str);
            //Console.ReadKey();
            #endregion

//复制一个多媒体文件

            #region WriteAllBytes
            //先读取再写入
            //byte[] buffer = File.ReadAllBytes(@"C:\Users\dell\Desktop\好声音.wmv");

//File.WriteAllBytes(@"C:\Users\dell\Desktop\好声音复制.wmv", buffer);

            //Console.WriteLine("复制成功");
            //Console.ReadKey();
            #endregion

            #region WriteAllLines
            //File.WriteAllLines(@"C:\Users\dell\Desktop\新的.txt", new string[] { "1", "2", "3", "4" });
            //Console.WriteLine("写入成功");
            //Console.ReadKey();
            #endregion

            #region WriteAllText
            //File.WriteAllText(@"C:\Users\dell\Desktop\新的.txt", "看有没有覆盖掉");
            //Console.WriteLine("写入成功");
            //Console.ReadKey();
            #endregion

File.AppendAllText(@"C:\Users\dell\Desktop\新的123.txt","哈哈哈哈哈");
Console.ReadKey();

最强大的ReadAllBytes和WriteAllBytes 转换成2进制数据进行读写

File只适用与小型的文件代码简洁省时大文件用FileStream