INIHelper.cs

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

namespace PocketTDPControl
{
    internal class INIHelper
    {
        /// <summary>
        /// 获取值
        /// </summary>
        /// <param name="section">段落名</param>
        /// <param name="key">键名</param>
        /// <param name="defval">读取异常是的缺省值</param>
        /// <param name="retval">键名所对应的的值，没有找到返回空值</param>
        /// <param name="size">返回值允许的大小</param>
        /// <param name="filepath">ini文件的完整路径</param>
        /// <returns></returns>
        [DllImport("kernel32.dll")]
        private static extern int GetPrivateProfileString(
            string section,
            string key,
            string defval,
            StringBuilder retval,
            int size,
            string filepath);

        /// <summary>
        /// 写入
        /// </summary>
        /// <param name="section">需要写入的段落名</param>
        /// <param name="key">需要写入的键名</param>
        /// <param name="val">写入值</param>
        /// <param name="filepath">ini文件的完整路径</param>
        /// <returns></returns>
        [DllImport("kernel32.dll")]
        private static extern int WritePrivateProfileString(
            string section,
            string key,
            string val,
            string filepath);

        /// <summary>
        /// 获取数据
        /// </summary>
        /// <param name="section">段落名</param>
        /// <param name="key">键名</param>
        /// <param name="def">没有找到时返回的默认值</param>
        /// <param name="filename">ini文件完整路径</param>
        /// <returns></returns>
        public static string ReadString(string section, string key, string def, string filename)
        {
            StringBuilder sb = new StringBuilder(1024);
            GetPrivateProfileString(section, key, def, sb, 1024, filename);
            return sb.ToString();
        }

        /// <summary>
        /// 写入数据
        /// </summary>
        /// <param name="section">段落名</param>
        /// <param name="key">键名</param>
        /// <param name="val">写入值</param>
        /// <param name="filename">ini文件完整路径</param>
        public static void WriteString(string section, string key, string val, string filename)
        {
            WritePrivateProfileString(section, key, val, filename);
        }
    }
}