C# 使用List泛型讀取和儲存文字檔

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)        {            //測試代碼:             test mgr = new test();            mgr.WriteListToTextFile(mgr.GetUserNames(), @"c:\test.txt"); //測試產生新的Txt檔案            List<string> list = mgr.ReadTextFileToList(@"C:\test.txt");//記取字串             foreach (string s in list) Console.WriteLine(s); //顯示出來′             Console.ReadKey(); //按′任一鍵關閉Console                      /*             * 結果：

             *  JUQI\ASPNET                JUQI\capable                JUQI\Guest                JUQI\itd0300166                JUQI\IUSR_PLSH166                JUQI\IWAM_PLSH166                JUQI\SUPPORT_388945a0             *              * */        }    }        public class test        {            /// <summary>            /// 擷取本機上的使用者帳戶

            /// </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;            }            //將List轉換為TXT檔案            public void WriteListToTextFile(List<string> list, string txtFile)            {                //建立一個檔案流，用以寫入或者建立一個StreamWriter                 FileStream fs = new FileStream(txtFile, FileMode.OpenOrCreate, FileAccess.Write);                StreamWriter sw = new StreamWriter(fs);                sw.Flush();                // 使用StreamWriter來往檔案中寫入內容                 sw.BaseStream.Seek(0, SeekOrigin.Begin);                for (int i = 0; i < list.Count; i++) sw.WriteLine(list[i]);                //關閉此檔案t                 sw.Flush();                sw.Close();                fs.Close();            }            //讀取文字檔轉換為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類來讀取檔案                 sr.BaseStream.Seek(0, SeekOrigin.Begin);                // 從資料流中讀取每一行，直到檔案的最後一行                string tmp = sr.ReadLine();                while (tmp != null)                {                    list.Add(tmp);                    tmp = sr.ReadLine();                }                //關閉此StreamReader對象                 sr.Close();                fs.Close();                return list;            }        }    }