一般使用一个相关win32 api的封装类；我用的如下；

using System;
using System.Runtime.InteropServices;
using System.Text;namespace DotNet.Utilities
{/// <summary>/// INI文件读写类。/// </summary>public class INIFile{public string path;public INIFile(string INIPath){path = INIPath;}[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);[DllImport("kernel32")]private static extern int GetPrivateProfileString(string section, string key, string defVal, Byte[] retVal, int size, string filePath);[DllImport("kernel32")]private static extern int GetPrivateProfileInt(string section, string key, int defval, string filePath);/// <summary>/// 写INI文件/// </summary>/// <param name="Section"></param>/// <param name="Key"></param>/// <param name="Value"></param>public void IniWriteValue(string Section,string Key,string Value){WritePrivateProfileString(Section,Key,Value,this.path);}/// <summary>/// 读取INI文件/// </summary>/// <param name="Section"></param>/// <param name="Key"></param>/// <returns></returns>public string IniReadValue(string Section,string Key){StringBuilder temp = new StringBuilder(255);int i = GetPrivateProfileString(Section,Key,"",temp, 255, this.path);return temp.ToString();}public byte[] IniReadValues(string section, string key){byte[] temp = new byte[255];int i = GetPrivateProfileString(section, key, "", temp, 255, this.path);return temp;}public int IniReadInt(string Section, string Key){int i = GetPrivateProfileInt(Section, Key, 0, this.path);return i;}/// <summary>/// 删除ini文件下所有段落/// </summary>public void ClearAllSection(){IniWriteValue(null,null,null);}/// <summary>/// 删除ini文件下personal段落下的所有键/// </summary>/// <param name="Section"></param>public void ClearSection(string Section){IniWriteValue(Section,null,null);}}
}

C#，

        private void Form1_Load(object sender, EventArgs e){INIFile myini = new INIFile(Environment.CurrentDirectory + "\\demo.ini");textBox1.Text = myini.IniReadValue("mymoney1", "moneyname");textBox2.Text = myini.IniReadInt("mymoney1", "moneycount").ToString();}

运行；

ini文件；

[mymoney1]
moneyname=jintiao
moneycount=9999