using System;
using System.Collections.Generic;
//using System.Linq;
using System.Runtime.InteropServices;
using System.Text;
 
namespace YourNameSpace
{
	class IniFile
	{
		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;			
		}
 
		public long IniWriteValue(string Section, string Key, string Value)
		{
			long ret = WritePrivateProfileString(Section, Key, Value, this.path);			
 
			return ret;
		}
 
		public string IniReadValue(string Section, string Key)
		{
			StringBuilder temp = new StringBuilder(255);
			int i = GetPrivateProfileString(Section, Key, "", temp, 255, this.path);
			return temp.ToString();
		}
	}
}

IniFile ini = new IniFile(INIfile);
 
string tmp = ini.IniReadValue("SectionName", "KeyName");