Ini文件的读写

最简单的Ini读写：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.IO;
using System.Text;namespace AuxiliaryTools
{public static class IniHelper{/// <summary>/// 读 INI/// </summary>/// <param name="file">完整路径</param>/// <param name="section">段名，如 "UI"</param>/// <param name="key">键名，如 "Width"</param>/// <param name="defaultValue">找不到时返回什么</param>public static string Read(string file, string section, string key, string defaultValue = ""){if (!File.Exists(file)) return defaultValue;string target = $"[{section}]";          // [UI]bool hitSection = false;foreach (var line in File.ReadLines(file, Encoding.UTF8)){var s = line.Trim();if (s.StartsWith("[") && s.EndsWith("]")){hitSection = string.Equals(s, target, System.StringComparison.OrdinalIgnoreCase);continue;}if (!hitSection) continue;var kv = s.Split(new[] { '=' }, 2);if (kv.Length == 2 &&string.Equals(kv[0].Trim(), key, System.StringComparison.OrdinalIgnoreCase))return kv[1].Trim();}return defaultValue;}/// <summary>/// 写 INI（无则创建，有则覆盖）/// </summary>public static void Write(string file, string section, string key, string value){var lines = new List<string>();bool hitSection = false, done = false;if (File.Exists(file))lines.AddRange(File.ReadAllLines(file, Encoding.UTF8));string target = $"[{section}]";for (int i = 0; i < lines.Count; i++){var s = lines[i].Trim();if (s.StartsWith("[") && s.EndsWith("]")){hitSection = string.Equals(s, target, System.StringComparison.OrdinalIgnoreCase);continue;}if (!hitSection) continue;var kv = s.Split(new[] { '=' }, 2);if (kv.Length == 2 &&string.Equals(kv[0].Trim(), key, System.StringComparison.OrdinalIgnoreCase)){lines[i] = $"{key}={value}";   // 原地替换done = true;break;}}if (!done)   // 没找到，追加
            {if (!hitSection) lines.Add(target);lines.Add($"{key}={value}");}File.WriteAllLines(file, lines, Encoding.UTF8);}}
}

调用：

// 写
IniHelper.Write(ini, "Project_Color", "Color_SET_CS", value.ToString());
//读
IniHelper.Read(ini, "Project_Color", "Color_SET_WWC", "")