3、公共接口不应该使用太过频繁，当有大量类型实现公共接口时，应当避免通过公共接口调用对象

using System;

namespace ShouldCode
{
    public interface IShouldBaseNotInterface
    {
        bool Show();
    }
    public class A1 : IShouldBaseNotInterface
    {
        public bool Show()
        {
            throw new NotImplementedException();
        }
    }
    //A2:IShouldClassNotInterface
    //A3:IShouldClassNotInterface
    //...
    public class A100000 : IShouldBaseNotInterface
    {
        public bool Show()
        {
            throw new NotImplementedException();
        }
    }
    public abstract class Base : IShouldBaseNotInterface
    {
        public bool Show()
        {
　　　　　　　//第一次通过某个接口调用方法时会去查找具体类型，内部会有 Monomorphic Stub 优化。
            Console.WriteLine("InterFace.Do 需要查找类型，运行时子类类型太多就会影响程序性能。");
            Console.WriteLine("Base.Do 通过基类来减少查找的类型数量");
            return true;
        }
    }
    public class ShouldBaseNotInterface : Base
    {
        public Base Base { get; set; } = new ShouldBaseNotInterface();
        public IShouldBaseNotInterface Interface { get; set; } = new ShouldBaseNotInterface();
        public void ShouldClass()
        {
            System.Console.WriteLine(Base.Show());
        }
        public void NotInterFace()
        {
            System.Console.WriteLine(Interface.Show());
        }
    }
}