using System;

using DryIoc;

public class Program

{

    public static void Main()

    {

        var container = new Container();

        container.Register<ParentViewModel>();

        container.Register<FirstViewModel>(Reuse.Singleton);

        container.Register<SecondViewModel>(Reuse.Singleton, 

            made: PropertiesAndFields.Of.Name("A", r => r.Container.Resolve<FirstViewModel>().A));

​

        var firstVM = container.Resolve<FirstViewModel>();

        firstVM.A = "blah";

        var secondVM = container.Resolve<SecondViewModel>();

        Console.WriteLine(secondVM.A);

    }

    public class ParentViewModel {

    }

    public class FirstViewModel {

       public FirstViewModel(ParentViewModel parent) { }

       public string A { get; set; }

    }

    public class SecondViewModel {

       public SecondViewModel(ParentViewModel parent) {}

       public string A { get; set; }

    }

}