C# 读写配置文件的简单类

最新推荐文章于 2024-10-09 09:21:45 发布

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#c# #string #class #ini

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本文介绍如何利用C#语言中的DllImport特性来直接调用Windows API，实现读写INI文件的功能。通过简单的代码示例，展示了如何定义结构体、调用API函数，并在实际应用中进行数据读取和写入。

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace Register
{
    /// <summary>
    /// Config类
    /// </summary>
    public class Config
    {
        public string IniPath;
        private StringBuilder temp = new StringBuilder(128);
        [System.Runtime.InteropServices.DllImport("kernel32", CharSet = System.Runtime.InteropServices.CharSet.Ansi)]
        private static extern int WritePrivateProfileString(string section, string key, string val, string filePath);
        [System.Runtime.InteropServices.DllImport("kernel32", CharSet = System.Runtime.InteropServices.CharSet.Ansi)]
        private static extern int GetPrivateProfileString(string section, string key, string def, StringBuilder retVal, int size, string filePath);
        /// <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 Write(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 Read(string Section, string Key)
        {
            GetPrivateProfileString(Section, Key, "", temp, 128, this.IniPath);
            return temp.ToString();
        }
    }
    /// <summary>
    /// Error类
    /// </summary>
    public class Error
    {
        /// <summary>
        /// 写入错误信息
        /// </summary>
        /// <param name="err">错误描述</param>
        public static void Write(ref System.Exception ex)
        {
            string err = DateTime.Now.ToString() + " " + ex.Message + " " + ex.StackTrace + "\r\n";
            System.IO.File.AppendAllText(System.Windows.Forms.Application.StartupPath + "\\error.log", err, System.Text.Encoding.UTF8);
        }
    }
}