Function referencing an instance created by another C # function

Question

I have a question that might be silly, but I'm new to C #, so I apologize for my insolence. I am wondering if a function can reference an instance that was created by another function.

I include sample code to illustrate what I mean:

class Program
{
    static void Main(string[] args)
    {
        Instantiator.Instantiate();
        Referent.Refer(instance);
        Console.ReadLine();
    }
}

public class Instance
{
    public void OnInstantiated()
    {
        Console.WriteLine("I have been instantiated.");
    }
    public void OnReferred()
    {
        Console.WriteLine("I have been referred to.");
    }
}

public class Instantiator
{
    public static void Instantiate()
    {
        Instance instance = new Instance();
        instance.OnInstantiated();
    }
}

public class Referent
{
    public static void Refer(Instance instance)
    {
        if(instance != null)
        {
            instance.OnReferred();
        }
        else
        {
            Console.WriteLine("No instance to refer to.");
        }
    }
}

What can I use to be able to refer to an instance of an instance (which is created by the Instantiator.Instantiate function) in the Referent.Refer function?

Thanks in advance for your relevant comments!

Answer 1

Make a Instantiatorreturn class when done

public class Instantiator
{
    public static Instance Instantiate()
    {
        Instance instance = new Instance();
        instance.OnInstantiated();
        return instance;
    }
}

class Program
{
    static void Main(string[] args)
    {
        var instance = Instantiator.Instantiate();
        Referent.Refer(instance);
        Console.ReadLine();
    }
}

Instantiate() Factory Pattern"

Answer 2

, , Singleton. , .

class Program
{
    static void Main(string[] args)
    {
        Instance.Instantiate();
        Referent.Refer(Instance.GetInstance());
        Console.ReadLine();
    }
}

public class Instance
{
    private static Instance myInstance;
    public void OnInstantiated()
    {
        Console.WriteLine("I have been instantiated.");
    }
    public void OnReferred()
    {
        Console.WriteLine("I have been referred to.");
    }
    public static void Instantiate()
    {
        myInstance = new Instance();
        myInstance.OnInstantiated();
    }
    public static Instance GetInstance()
    {
        return myInstance;
    }
}

public class Referent
{
    public static void Refer(Instance instance)
    {
        if (instance != null)
        {
            instance.OnReferred();
        }
        else
        {
            Console.WriteLine("No instance to refer to.");
        }
    }
}