using System;
using System.IO;code_br_code_br_namespace FileApplication
{
    class Program
    {
        static void Main(string[] args)
        {
            try
            {
                // 创建一个 StreamReader 的实例来读取文件 
                // using 语句也能关闭 StreamReader
                using (StreamReader sr = new StreamReader("names.txt"))
......................

using System;
using System.IO;code_br_code_br_namespace FileApplication
{
    class Program
    {
        static void Main(string[] args)
        {
            try
            {
                // 创建一个 StreamReader 的实例来读取文件 
                // using 语句也能关闭 StreamReader
                using (StreamReader sr = new StreamReader("names.txt"))
......................