Expression for static inheritance of C#

Expression for static inheritance by singleton pattern.md

Expression for static inheritance by singleton pattern in CSharp

AbstractVersion.cs

using System;

namespace SingletonStaticInheritance.Abstract
{
	public interface IStaticInheritable<T> where T : IPropertyContainer
	{
		T ClassProperty { get; }
	}

	public interface IPropertyContainer { }

	public abstract class VehiclePropertyContainerBase : IPropertyContainer
	{
		public abstract int Cost { get; }

		public abstract float Weight { get; }

		public virtual void Write()
		{
			Console.WriteLine($"Cost:{Cost}, Weight:{Weight}");
		}
	}


	public class Car : IStaticInheritable<VehiclePropertyContainerBase>
	{
		public static VehiclePropertyContainerBase Property { get; } = CarContainer.Singleton;
		public VehiclePropertyContainerBase ClassProperty { get; } = Property;
		private class CarContainer : VehiclePropertyContainerBase
		{
			static public VehiclePropertyContainerBase Singleton { get; } = new CarContainer();

			public override int Cost { get; } = 250;

			public override float Weight { get; } = 1000;
		}
	}

	public class Train : IStaticInheritable<VehiclePropertyContainerBase>
	{
		public static VehiclePropertyContainerBase Property { get; } = TrainContainer.Singleton;
		public VehiclePropertyContainerBase ClassProperty { get; } = Property;
		private class TrainContainer : VehiclePropertyContainerBase
		{
			static public VehiclePropertyContainerBase Singleton { get; } = new TrainContainer();

			public override int Cost { get; } = 12200;

			public override float Weight { get; } = 31880;
		}
	}
}

InterfaceVersion.cs

namespace SingletonStaticInheritance.Interface
{
	public interface IStaticInheritable<T> where T : IPropertyContainer
	{
		T ClassProperty { get; }
	}

	public interface IPropertyContainer { }

	public interface IVehiclePropertyContainer : IPropertyContainer
	{
		int Cost { get; }

		float Weight { get; }
	}


	public class Car : IStaticInheritable<IVehiclePropertyContainer>
	{
		public static IVehiclePropertyContainer Property { get; } = CarContainer.Singleton;
		public IVehiclePropertyContainer ClassProperty { get; } = Property;
		private class CarContainer : IVehiclePropertyContainer
		{
			static public IVehiclePropertyContainer Singleton { get; } = new CarContainer();

			public int Cost { get; } = 250;

			public float Weight { get; } = 1000;
		}
	}
	public class Train : IStaticInheritable<IVehiclePropertyContainer>
	{
		public static IVehiclePropertyContainer Property { get; } = TrainContainer.Singleton;
		public IVehiclePropertyContainer ClassProperty { get; } = Property;
		private class TrainContainer : IVehiclePropertyContainer
		{
			static public IVehiclePropertyContainer Singleton { get; } = new TrainContainer();

			public int Cost { get; } = 12200;

			public float Weight { get; } = 31880;
		}
	}
}

Program.cs

using SingletonStaticInheritance.Abstract;

namespace SingletonStaticInheritance
{
	class Program
	{
		static void Main(string[] args)
		{
			foreach (var item in new IStaticInheritable<VehiclePropertyContainerBase>[] { new Car(), new Train() })
			{
				item.ClassProperty.Write();
				//item.ClassProperty.Cost; -> 250, 12200
				//Car.Property.Cost; -> 250
			}
		}
    }
}