using System;

using System.Collections.Generic;

public class ConfigManager

{

    Dictionary<string, object> settings = new Dictionary<string, object>();

    private static ConfigManager instance = new ConfigManager();

​

    private ConfigManager() { }

​

    public static ConfigManager getInstance() { return instance; }

​

    public void Set(string key, object value)

    {

        settings[key] = value;

    }

​

    public object Get(string key)

    {

        return settings[key];

    }

}   

​

​

public class Program

{

    public static void Main()

    {

        ConfigManager configManager1 = ConfigManager.getInstance();

        configManager1.Set("name", "gof");

​

        ConfigManager configManager2 = ConfigManager.getInstance();

        Console.WriteLine(configManager2.Get("name"));

    }

}