C#EventDriven_DI_B_1b

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace EventDriven1b
{
    class B
    {
        public A A { get; set; }

        public B(A a)
        {
            this.A = a; // DI constructor
            // this.A = new A();
        }
    }
}