如何从C#中的INI文件中读取值？

using System;
using System.IO;
using System.Collections.Generic;

public class IniFile
{
    private Dictionary<string, Dictionary<string, string>> sections = new Dictionary<string, Dictionary<string, string>>();

    public IniFile(string filePath)
    {
        var lines = File.ReadAllLines(filePath);

        Dictionary<string, string> currentSection = null;

        foreach (var line in lines)
        {
            if (line.StartsWith("[") && line.EndsWith("]"))
            {
                var sectionName = line.Substring(1, line.Length - 2);
                currentSection = new Dictionary<string, string>();
                sections[sectionName] = currentSection;
            }
            else if (currentSection != null && line.Contains("="))
            {
                var parts = line.Split('=');
                var key = parts[0].Trim();
                var value = parts[1].Trim();
                currentSection[key] = value;
            }
        }
    }

    public string GetValue(string section, string key)
    {
        if (sections.TryGetValue(section, out var sectionData) && sectionData.TryGetValue(key, out var value))
        {
            return value;
        }

        return null;
    }
}

var iniFile = new IniFile("example.ini");
var value = iniFile.GetValue("SectionName", "KeyName");