如何实现自定义文件存储数据
小弟我自己做了一个winform程序，想把textbox的数据存储到 自定义的数据文件而不是数据库，
比如说：
ID 语文 数学 英语
1 80 60 85
2 70 55 90
把这些数据写入到自定义的 数据文件，txt之类的

表结构如下：
+-------+---------+------+-----+---------+----------------+
| Field | Type | Null | Key | Default | Extra |
+-------+---------+------+-----+---------+----------------+
| id | int(11) | NO | PRI | NULL | auto_increment |
| YM | int(11) | YES | | NULL | |
| SX | int(11) | YES | | NULL | |
| YU | int(11) | YES | | NULL | |
+-------+---------+------+-----+---------+----------------+
该怎么实现？用结构体？
哪位高手给个代码参考下？学习中...........



[解决办法]
System.IO.File

[解决办法]
每条记录就是一个struct，整个数据集就是struct的数组，然后再附加一些信息，比如数量，分类等
比如
struct A
{
public string content;
public int num;
}
struct B
{
public int count;
A[] items
}
当然记得用MarshalAs进行说明
[解决办法]
第一种方法，用结构体，这个比较麻烦

C# code

using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Text;using System.Windows.Forms;using System.IO;using System.Runtime.InteropServices;namespace RWFile{    public partial class Form1 : Form    {        public Form1()        {            InitializeComponent();        }        //从文件中读结构体        private void button1_Click(object sender, EventArgs e)        {            string strFile = Application.StartupPath + """test.dat";            if (!File.Exists(strFile))            {                MessageBox.Show("文件不存在");                return;            }            FileStream fs = new FileStream(strFile, FileMode.Open, FileAccess.ReadWrite);            TestStruct ts = new TestStruct();            byte[] bytData = new byte[Marshal.SizeOf(ts)];            fs.Read(bytData, 0, bytData.Length);            fs.Close();            ts = rawDeserialize(bytData);            textBox1.Text = ts.dTest.ToString();            textBox2.Text = ts.uTest.ToString();            textBox3.Text = Encoding.Default.GetString(ts.bTest);         }        //向文件中写结构体        private void button2_Click(object sender, EventArgs e)        {            string strFile = Application.StartupPath + """test.dat";            FileStream fs = new FileStream(strFile, FileMode.Create , FileAccess.Write);            TestStruct ts = new TestStruct();            ts.dTest = double.Parse(textBox1.Text);            ts.uTest = UInt16.Parse(textBox2.Text);            ts.bTest = Encoding.Default.GetBytes(textBox3.Text);             byte[] bytData = rawSerialize(ts);            fs.Write(bytData, 0, bytData.Length);            fs.Close();        }        [StructLayout(LayoutKind.Sequential,CharSet = CharSet.Ansi)] //,Size=16        public struct TestStruct        {            [MarshalAs(UnmanagedType.R8)] //,FieldOffset(0)]             public double dTest;            [MarshalAs(UnmanagedType.U2)] //, FieldOffset(8)]            public UInt16 uTest;            [MarshalAs(UnmanagedType.ByValArray, SizeConst = 6)] //, FieldOffset(10)]            public byte[] bTest;        }        //序列化        public static byte[] rawSerialize(object obj)        {            int rawsize = Marshal.SizeOf(obj);            IntPtr buffer = Marshal.AllocHGlobal(rawsize);            Marshal.StructureToPtr(obj, buffer, false);            byte[] rawdatas = new byte[rawsize];            Marshal.Copy(buffer, rawdatas, 0, rawsize);            Marshal.FreeHGlobal(buffer);            return rawdatas;        }        //反序列化        public static TestStruct rawDeserialize(byte[] rawdatas)        {            Type anytype = typeof(TestStruct);           int rawsize = Marshal.SizeOf(anytype);            if (rawsize > rawdatas.Length) return new TestStruct();            IntPtr buffer = Marshal.AllocHGlobal(rawsize);            Marshal.Copy(rawdatas, 0, buffer, rawsize);            object retobj = Marshal.PtrToStructure(buffer, anytype);            Marshal.FreeHGlobal(buffer);            return (TestStruct)retobj;        }              }}