using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
 
using System.IO;
using System.Runtime.InteropServices;
 
namespace INI
{
    class IniFiles
    {
        public string inipath;
 
        //声明API函数
 
        [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);
        /// <summary> 
        /// 构造方法 
        /// </summary> 
        /// <param name="INIPath">文件路径</param> 
        public IniFiles(string INIPath)
        {
            inipath = INIPath;
        }
 
        public IniFiles() { }
 
        /// <summary> 
        /// 写入INI文件 
        /// </summary> 
        /// <param name="Section">项目名称(如 [TypeName] )</param> 
        /// <param name="Key">键</param> 
        /// <param name="Value">值</param> 
        public void IniWriteValue(string Section, string Key, string Value)
        {
            if (string.IsNullOrEmpty(Section))
            {
                throw new ArgumentException("必须指定节点名称", "Section");
            }
            if (string.IsNullOrEmpty(Key))
            {
                throw new ArgumentException("必须指定键名称", "Key");
            }
            if (Value == null)
            {
                throw new ArgumentException("值不能为null", "Value");
            }
           
            WritePrivateProfileString(Section, Key, Value, this.inipath);            
        }
        /// <summary> 
        /// 读出INI文件 
        /// </summary> 
        /// <param name="Section">项目名称(如 [TypeName] )</param> 
        /// <param name="Key">键</param> 
        public void IniReadValue(string Section, string Key,ref string Value)
        {
            StringBuilder temp = new StringBuilder(500);
            if (string.IsNullOrEmpty(Section))
            {
                throw new ArgumentException("必须指定节点名称", "Section");
            }
            if (string.IsNullOrEmpty(Key))
            {
                throw new ArgumentException("必须指定键名称", "Key");
            }
 
            int i = GetPrivateProfileString(Section, Key, "", temp, 500, this.inipath);
            if (i != 0)
            {
                Value = temp.ToString();
            }
            temp = null;            
        }
 
 
        /// <summary> 
        /// 验证文件是否存在 
        /// </summary> 
        /// <returns>布尔值</returns> 
        public bool ExistINIFile()
        {
            return File.Exists(inipath);
        }
    }
}