using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;
using System.Management;

namespace Ant.Frame
{
    //C# 使用List泛型读取和保存文本文件 
    public class TxtToList
    {

        /// <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;
        }
    }
    ////测试代码: 
    //       TxtToList mgr = new TxtToList();
    //       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 


}