using System;

using System.Collections.Generic;

using System.Linq;

public class Program

{

​

    public static void Main()

    {   

        var NewClassInstance = Singleton.GetSingleton().NewClassInstance;

        Singleton.GetSingleton().NewClassInstance.Method();

        var OtherClassInstance = Singleton.GetSingleton().OtherClassInstance;

        var Proparty  = OtherClassInstance.Name;

    }

}

​

​

​

public class Singleton

{

    public NewClass NewClassInstance {get; private set;}

    public OtherClass OtherClassInstance {get; private set;}

​

​

    private static readonly NewClass _newClass = new NewClass();

    private static readonly OtherClass _otherClass = new OtherClass();

    private static readonly Singleton _singleton = new Singleton();

    private Singleton()

    {

        NewClassInstance = _newClass;

        // Prevent outside instantiation

    }

​

    public static Singleton GetSingleton()

    {

        return _singleton;

    }

}

​

public class NewClass

{

    public NewClass()

    {

    }

​

    public void Method()

    {

    }

}

​

​

public class OtherClass

{

    public string Name {get; set;}

    public OtherClass()

    {

    }

}