C#读写INI文件的最简方法

; 注释行（以分号开始）

[Section1]     ; 段落名，用方括号包围
key1 = value1   ; 键值对，等号分隔键与值
key2 = value2

[Section2]
keyA = valueA
keyB = valueB

using Microsoft.VisualBasic.FileIO;

// 读取INI文件
public string ReadIniValue(string section, string key, string filePath)
{
    return IniParser.ReadKeyValue(filePath, section, key, "");
}

// 写入INI文件
public void WriteIniValue(string section, string key, string value, string filePath)
{
    IniParser.WriteKeyValue(filePath, section, key, value);
}

// 定义辅助类
internal static class IniParser
{
    [DllImport("kernel32")]
    private static extern int GetPrivateProfileString(string section, string key, string def, StringBuilder retVal, int size, string filePath);
    [DllImport("kernel32")]
    private static extern int WritePrivateProfileString(string section, string key, string val, string filePath);

    internal static string ReadKeyValue(string iniPath, string section, string key, string defaultValue)
    {
        const int MAX_BUFFER = 65535;
        var sb = new StringBuilder(MAX_BUFFER);
        GetPrivateProfileString(section, key, defaultValue, sb, MAX_BUFFER, iniPath);
        return sb.ToString();
    }

    internal static void WriteKeyValue(string iniPath, string section, string key, string value)
    {
        WritePrivateProfileString(section, key, value, iniPath);
    }
}

using IniParser;
using IniParser.Model;

// 读取INI文件
public string ReadIniValue(string section, string key, string filePath)
{
    var parser = new FileIniDataParser();
    IniData data = parser.ReadFile(filePath);
    return data[section][key];
}

// 写入INI文件
public void WriteIniValue(string section, string key, string value, string filePath)
{
    var parser = new FileIniDataParser();
    IniData data = parser.ReadFile(filePath);
    data[section][key] = value;
    parser.WriteFile(filePath, data);
}