C# 读写 config.ini 文件

建立config.ini：

;**********************************
;**********************************
[setting]
companyName=******公司
softName=******系统
module=**模块
version=0.0.0.1

新建类：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Runtime.InteropServices;

namespace dgdSoft
{
    public class IniFile
    {
        public string companyName, module, softname, version, sqlConstr;
        public string path;
        [DllImport("kernel32")]
        private static extern long WritePrivateProfileString(string section,
        string key, string val, string filePath);
        [DllImport("kernel32")]
        private static extern int GetPrivateProfileString(string section, string key, string def, StringBuilder retVal,
        int size, string filePath);
        public IniFile(string INIPath)
        {

            path = INIPath;

        }
        //该函数取得一切基础配置参数
        //----------------------------------------------------------------------------------------------
        public void getIni()
        {
            companyName = IniReadValue("setting", "companyName").ToString();
            module = IniReadValue("setting", "module").ToString();
            softname = IniReadValue("setting", "softname").ToString();
            version = IniReadValue("setting", "version").ToString();
            sqlConstr = "initial catalog=***;Server=***;User ID=***;Password=***;Connect Timeout=30";
        }
        public void IniWriteValue(string Section, string Key, string Value)
        {
            WritePrivateProfileString(Section, Key, Value, this.path);
        }
        public string IniReadValue(string Section, string Key)
        {

            StringBuilder temp = new StringBuilder(1024);

            int i = GetPrivateProfileString(Section, Key, "", temp, 1024, this.path);

            return temp.ToString();

        }

        
    }
}

调用：

//新定义一个名字为dgd_ini的ini类，用于处理INI配置文件的读取操作
        IniFile dgd_ini = new IniFile(System.IO.Path.Combine(Application.StartupPath, "config.ini"));
public Form1()
        {
            dgd_ini.getIni();
            InitializeComponent();
        }