.net streamReader 和 streamWrite 操作文本文件

        ///讀取
        StreamReader sr = new StreamReader(@"D:\aa.txt");
        ArrayList list = new ArrayList();
        string text="";
        while (text != null)
        {
            text = sr.ReadLine();
            if(text!=null)
                list.Add(text);
        }
        for (int i = 0; i < list.Count; i++)
        {
            Response.Write(list[i]+"<br/>");
        }
        sr.Dispose();
        sr.Close();

        ///寫入
        StreamWriter sw = new StreamWriter(@"D:\aa.txt",true);
        sw.Write("ccc");
        sw.Flush();
        sw.Dispose();
        sw.Close();