using System;using System.Collections.Generic;using System.Text;using System.IO; namespace _5_4{    class Program    {        private const string path = "E:\\test2.txt";        static void Main(string[] args)        {            StreamWriter sw = null;            try            {                sw = createfile();                writetext(sw);                readtext(sw);            }            catch (IOException e)            {                Console.WriteLine(e.StackTrace);            }            finally            {                if (sw != null)                    sw.Close();            }        }         private static StreamWriter createfile()         {            FileStream fs = new FileStream(path, FileMode.OpenOrCreate, FileAccess.ReadWrite, FileShare.None);            return new StreamWriter(fs);        }        private static void writetext(StreamWriter sw)        {            sw.WriteLine("testing the streamwriter capabilities");            sw.WriteLine("writing bboolean {0}",true);            sw.WriteLine("writing float {0}",6.78);            sw.WriteLine("writing long {0}",4576457L);            sw.Write(445);            sw.WriteLine(new person("jack"));            sw.Flush();        }        private static void readtext(StreamWriter sw)         //读取流中数据        {            StreamReader sr = new StreamReader(sw.BaseStream); //返回基础流，也不知道是什么意思？？？？？？懂得的说下啊             sr.BaseStream.Seek(0, SeekOrigin.Begin);            while (sr.Peek() > -1)  //检测 下一个字符是否可用，但指针并不向后移动。如到末尾，则返回-1            {                Console.WriteLine(sr.ReadLine()); //读取一行后，指针向后移动，            }        }    }    class person    {        string name;        public person(string name) { this.name = name; }    }}

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