Ini文件读写配置工具类 - C#小函数类推荐

       此文记录的是INI文件的读写工具类。

/***

    Ini文件读写配置工具类

    Austin Liu 刘恒辉
    Project Manager and Software Designer

    E-Mail: lzhdim@163.com
    Blog:   http://lzhdim.cnblogs.com
    Date:   2024-01-15 15:18:00

    使用说明：
        1、读取；
        string names = IniFileUtil.GetString("Information", "Name", null, filename);
        2、写入；
        IniFileUtil.WriteString("Information", "Name", names, filename);

***/

namespace Lzhdim.LPF.Utility
{
    using System.Runtime.InteropServices;
    using System.Text;

    /// <summary>
    /// Ini文件读写配置工具类
    /// </summary>
    public class IniFileUtil
    {
        /// <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 GetString(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);
        }

        /// <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);
    }
}