using System;

public class Program

{

​

    public abstract class BaseModel<T>

    {

​

        private string __ModelName { get; set; }

​

        public virtual Int32 Id { get; set; }

        public virtual DateTime CreateDate { get; set; }

        public virtual DateTime WriteDate { get; set; }

​

        public BaseModel(string ModelName)

        {

            __ModelName = ModelName;

        }

​

        public override string ToString()

        {

            return this.Id.ToString();

        }

​

        public static System.Collections.Generic.IEnumerable<T> GetAll()

        {

            return GetAllWithDomain(null);

        }

​

        public static abstract System.Collections.Generic.IEnumerable<T> GetAllWithDomain(params object[] Domain);

​

    }

    public class CarModel : BaseModel<CarModel>

    {

        public string Make {get; set; }

        public string Color {get; set; }

        public string Doors {get; set; }

        public CarModel() : base("car.model")

        {

        }

        public static override System.Collections.Generic.IEnumerable<CarModel> GetAllWithDomain(params object[] Domain)

        {

            //... fetch cars from somwhere

        }

    }

}

​

​

​

​

​