C# 使用List泛型读取和保存文本文件

using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Management;//添加引用using System.IO;namespace ConsoleApplication1{    class Program    {        static void Main(string[] args)        {            //测试代码:             test mgr = new test();            mgr.WriteListToTextFile(mgr.GetUserNames(), @"c:/test.txt"); //测试生成新的Txt文件            List<string> list = mgr.ReadTextFileToList(@"C:/test.txt");//记取字符串             foreach (string s in list) Console.WriteLine(s); //显示出来′             Console.ReadKey(); //按′任一键关闭Console                      /*             * 结果：

             *  JUQI/ASPNET                JUQI/capable                JUQI/Guest                JUQI/itd0300166                JUQI/IUSR_PLSH166                JUQI/IWAM_PLSH166                JUQI/SUPPORT_388945a0             *              * */        }    }        public class test        {            /// <summary>            /// 获取本机上的用户帐户

            /// </summary>            /// <param name="domainName"></param>            /// <returns></returns>            public  List<String> GetUserNames()            {                ManagementClass mcs = new ManagementClass("Win32_UserAccount");                ManagementObjectCollection moc = mcs.GetInstances();                List<String> lstNames = new List<string>();                foreach (ManagementObject mo in moc)                {                    lstNames.Add(Environment.UserDomainName + "//" + mo.GetPropertyValue("Name").ToString());                    //domainName = mo.GetPropertyValue("Domain").ToString();                }                return lstNames;            }            //将List转换为TXT文件            public void WriteListToTextFile(List<string> list, string txtFile)            {                //创建一个文件流，用以写入或者创建一个StreamWriter                 FileStream fs = new FileStream(txtFile, FileMode.OpenOrCreate, FileAccess.Write);                StreamWriter sw = new StreamWriter(fs);                sw.Flush();                // 使用StreamWriter来往文件中写入内容                 sw.BaseStream.Seek(0, SeekOrigin.Begin);                for (int i = 0; i < list.Count; i++) sw.WriteLine(list[i]);                //关闭此文件t                 sw.Flush();                sw.Close();                fs.Close();            }            //读取文本文件转换为List             public List<string> ReadTextFileToList(string fileName)            {                FileStream fs = new FileStream(fileName, FileMode.Open, FileAccess.Read);                List<string> list = new List<string>();                StreamReader sr = new StreamReader(fs);                //使用StreamReader类来读取文件                 sr.BaseStream.Seek(0, SeekOrigin.Begin);                // 从数据流中读取每一行，直到文件的最后一行                string tmp = sr.ReadLine();                while (tmp != null)                {                    list.Add(tmp);                    tmp = sr.ReadLine();                }                //关闭此StreamReader对象                 sr.Close();                fs.Close();                return list;            }        }    }