比如说我把一份通讯录写入到一个文本里面保存,每一行是一组信息,各元素之间用英文","隔开,如:姓名,性别,电话,住址
然后我要把它读出来并还原到数组,用StreamReader该怎么实现?
最好有具体代码.
class st
    {
        private int id;
        private string name;
        private string filename;
        static public st[] inf = new st[100];
        public void en()
        {
            filename = "E:/information.txt";
            FileStream file = null;
            try
            {
                file = File.Open(filename, FileMode.Append);
            }
            catch (Exception)
            {
                Console.WriteLine("文件打开失败！");
                return;
            }
            StreamWriter write = new StreamWriter(file);
            for (int k = 0; k < 100; k++)
            {
                inf[k] = new st();
            }
            for (int i = 0; i < 100; i++)
            {
                Console.Write("学号：");
                inf[i].id = int.Parse(Console.ReadLine());
                Console.Write("姓名：");
                inf[i].name = Console.ReadLine();
                write.WriteLine(inf[i].id + "," + inf[i].name);
                Console.WriteLine("是否退出信息输入：1、是（请输入“E”）；2、否（请输入任意键）");
                if (Console.ReadLine() == "E")
                    break;
                else
                    continue;
            }
            write.Close();
            //就是这里了.
        }

你不是写好了吗？

是读啊
txt文档不知道怎么弄也，用xml文档行不行啊，这个很容易 啊