C#操作INI文件的方法详解

[DllImport("kernel32")] //读取INI文件
public static extern int GetPrivateProfileString(string section, string key, string def, StringBuilder retVal, int size, string filePath);
[DllImport("kernel32")]//向INI文件中写入数据
public static extern long WritePrivateProfileString(string mpAppName,string mpKeyName,string mpDefault,string mpFileName);

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading.Tasks;
using System.Windows.FORMs;

namespace INIOpera
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
        #region 定义公共变量
        public static string strnode = "INFO";
        public static string strPath = Application.StartupPath + "\\INFO.ini";
        #endregion

        //引入kernel32函数

        [DllImport("kernel32")] //读取INI文件
        public static extern int GetPrivateProfileString(string section, string key, string def, StringBuilder retVal, int size, string filePath);
        [DllImport("kernel32")]//向INI文件中写入数据
        public static extern long WritePrivateProfileString(string mpAppName, string mpKeyName, string mpDefault, string mpFileName);
        /// <summary>
        /// 读取INI文件
        /// </summary>
        /// <param name="section">欲在其中查找条目的小节名称。这个字串不区分大小写。</param>
        /// <param name="key">欲获取的项名或条目名。这个字串不区分大小写。</param>
        /// <param name="def">指定的条目没有找到时返回的默认值。可设为空（""）</param>
        /// <param name="filePath">完整的INI文件名</param>
        /// <returns></returns>
        public static string GetINIFileString(string section,string key, string def, string filePath)
        {
            StringBuilder strTemp = new StringBuilder(1024);
            GetPrivateProfileString(section, key, def, strTemp, 1024, filePath);
            return strTemp.ToString();
        }
       

        private void button1_Click(object sender, EventArgs e)
        {
            textBox1.Text = GetINIFileString(strNode, "Name","", strPath);
        }

        private void button2_Click(object sender, EventArgs e)
        {
            textBox2.Text = GetINIFileString(strNode, "Location", "", strPath);
        }

        private void button3_Click(object sender, EventArgs e)
        {
            textBox3.Text = GetINIFileString(strNode, "IP", "", strPath);
        }

        private void button4_Click(object sender, EventArgs e)
        {
            textBox4.Text = GetINIFileString(strNode, "ComputerName", "", strPath);
        }

        private void button5_Click(object sender, EventArgs e)
        {
            textBox5.Text = GetINIFileString(strNode, "WorkAblity", "", strPath);
        }

        private void textBox1_TextChanged(object sender, EventArgs e)
        {

        }

        private void textBox2_TextChanged(object sender, EventArgs e)
        {

        }

        private void button6_Click(object sender, EventArgs e)
        {
            WritePrivateProfileString(strNode, "Name", textBox10.Text,strPath);
        }

        private void button7_Click(object sender, EventArgs e)
        {
            WritePrivateProfileString(strNode, "Location", textBox9.Text, strPath);
        }

        private void button8_Click(object sender, EventArgs e)
        {
            WritePrivateProfileString(strNode, "IP", textBox8.Text, strPath);
        }

        private void button9_Click(object sender, EventArgs e)
        {
            WritePrivateProfileString(strNode, "ComputerName", textBox7.Text, strPath);
        }

        private void button10_Click(object sender, EventArgs e)
        {
            WritePrivateProfileString(strNode, "WorkAblity", textBox6.Text, strPath);
        }
    }
}