C#中读写INI文件

C#中读写INI文件

　　c#的类没有直接提供对ini文件的操作支持，可以自己包装win api的WritePrivateProfileString和GetPrivateProfileString函数实现。下面提供一个包装类，可以直接使用。

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading.Tasks;

namespace ESIMRobotSystem
{
    class Robot_WriteAndReadInitCls
    {
        public string inipath;
        /// <summary>
        /// 申明INI文件的写操作函数
        /// </summary>
        /// <param name="section">INI文件中的段落</param>
        /// <param name="key">INI文件中的关键字</param>
        /// <param name="val">INI文件中关键字的数值</param>
        /// <param name="filePath">INI文件的完整的路径和名称</param>
        /// <returns></returns>
        [DllImport("kernel32")]
        private static extern long WritePrivateProfileString(
            string section, 
            string key,
            string val, 
            string filePath
        );

        /// <summary>
        /// 申明INI文件的读操作函数
        /// </summary>
        /// <param name="section">INI文件中的段落名称</param>
        /// <param name="key">INI文件中的关键字</param>
        /// <param name="def">无法读取时候时候的缺省数值</param>
        /// <param name="retVal">读取数值</param>
        /// <param name="size">数值的大小</param>
        /// <param name="filePath">INI文件的完整路径和名称</param>
        /// <returns></returns>
        [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 Robot_WriteAndReadInitCls(string INIPath)
        {
            inipath = INIPath;
        }


        /// <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)
        {
            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 string IniReadValue(string Section, string Key)
        {
            StringBuilder temp = new StringBuilder(500);
            int i = GetPrivateProfileString(Section, Key, "", temp, 500, this.inipath);
            return temp.ToString();
        }


        /// <summary> 
        /// 验证文件是否存在 
        /// </summary> 
        /// <returns>布尔值</returns> 
        public bool ExistINIFile()
        {
            return File.Exists(inipath);
        }
    }
}