C# 配置文件相关方法

`using System;
using System.Collections.Generic;
using System.Configuration;
using System.IO;
using System.Reflection;
class Program
{
static void Main()
{
// 获取应用程序的根目录路径
string appDirectory = Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location);
string configFilePath = Path.Combine(appDirectory, "reg.config");

    // 调用方法来创建配置文件
    CreateConfigFile(configFilePath);

    // 键值对字典
    Dictionary<string, string> keyValuePairs = new Dictionary<string, string>
    {
        { "key1", "zwNo3bHIOs94h8Gnw0qFoZ6GqX4W0/6AN6soH1gjOjQ=" },
        { "key2", "another_value" },
        { "key3", "yet_another_value" }
    };

    // 写入多个键值对
    WriteKeyValuePairs(configFilePath, keyValuePairs);

    // 更新其中一个键值对
    UpdateKeyValuePair(configFilePath, "key2", "new_value_for_key2");
}

// 创建配置文件
static void CreateConfigFile(string filePath)
{
    if (!File.Exists(filePath))
    {
        // 创建一个新的配置文件
        Configuration config = ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None);
        config.SaveAs(filePath);
        Console.WriteLine("配置文件已创建: " + filePath);
    }
    else
    {
        Console.WriteLine("配置文件已存在.");
    }
}

// 写入多个键值对
static void WriteKeyValuePairs(string filePath, Dictionary<string, string> keyValuePairs)
{
    try
    {
        Configuration config = ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None);
        foreach (var pair in keyValuePairs)
        {
            if (config.AppSettings.Settings[pair.Key] == null)
            {
                config.AppSettings.Settings.Add(pair.Key, pair.Value);
            }
            else
            {
                config.AppSettings.Settings[pair.Key].Value = pair.Value;
            }
        }
        config.Save();
        Console.WriteLine("键值对已写入.");
    }
    catch (Exception ex)
    {
        Console.WriteLine("写入键值对时出错: " + ex.Message);
    }
}

// 更新键值对
static void UpdateKeyValuePair(string filePath, string key, string newValue)
{
    try
    {
        Configuration config = ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None);
        if (config.AppSettings.Settings[key] != null)
        {
            config.AppSettings.Settings[key].Value = newValue;
            config.Save();
            Console.WriteLine("键值对已更新: " + key + " = " + newValue);
        }
        else
        {
            Console.WriteLine("键不存在，无法更新.");
        }
    }
    catch (Exception ex)
    {
        Console.WriteLine("更新键值对时出错: " + ex.Message);
    }
}

}`