C#中读写INI文件的方法例子

using System;
using System.Runtime.InteropServices;
using System.Text;

namespace INIDemo
{
    class Program
    {
        static void Main(string[] args)
        {
            WritePrivateProfileString("Demo", "abc", "123", "c:\\demo.ini");

            StringBuilder temp = new StringBuilder();
            GetPrivateProfileString("Demo", "abc", "", temp, 255, "c:\\demo.ini");
            Console.WriteLine(temp);

            Console.ReadLine();
        }

        [DllImport("kernel32", CharSet = CharSet.Unicode, SetLastError = true)]
        private static extern bool WritePrivateProfileString(
            string lpAppName, string lpKeyName, string lpString, string lpFileName);

        [DllImport("kernel32", CharSet = CharSet.Unicode, SetLastError = true)]
        private static extern int GetPrivateProfileString(
            string lpAppName, string lpKeyName, string lpDefault, StringBuilder lpReturnedString,
            int nSize, string lpFileName);
    }
}

public class Ini
    {
        // 声明INI文件的写操作函数 WritePrivateProfileString()
        [System.Runtime.InteropServices.DllImport("kernel32")]
        private static extern long WritePrivateProfileString(string section, string key, string val, string filePath);
        // 声明INI文件的读操作函数 GetPrivateProfileString()
        [System.Runtime.InteropServices.DllImport("kernel32")]
        private static extern int GetPrivateProfileString(string section, string key, string def, System.Text.StringBuilder retVal, int size, string filePath);
        private string sPath = null;

        public Ini(string path)
        {
            this.sPath = path;
        }

        public void Writue(string section, string key, string value)
        {
            // section=配置节，key=键名，value=键值，path=路径
            WritePrivateProfileString(section, key, value, sPath);

        }
        public string ReadValue(string section, string key)
        {
            // 每次从ini中读取多少字节
            System.Text.StringBuilder temp = new System.Text.StringBuilder(255);
            // section=配置节，key=键名，temp=上面，path=路径
            GetPrivateProfileString(section, key, "", temp, 255, sPath);
            return temp.ToString();
        }
    }