从子类访问隐藏的属性

Question

有时在 C# 中隐藏继承的基类的属性很有用，例如当您想要更改类型时。但是，一旦我隐藏了继承的属性，我不知道如何读取或写入隐藏属性的值。这是一个使用动物和狗的小例子：public enum DogBreed {    Corgi, Pug}public class Animal {    public string Breed { get; set; }}public class Dog : Animal {    public new DogBreed? Breed {        get {            // Not working since "Breed" now refers to Dog.Breed not Animal.Breed            if (Breed == "Corgi") return DogBreed.Corgi;            if (Breed == "Pug") return DogBreed.Pug;            return null;        }        set {            // Also Not working for same reason as above            if (value == DogBreed.Corgi) Breed = "Corgi";            else if (value == DogBreed.Pug) Breed = "Pug";            else Breed = null;        }    }}如何访问隐藏的属性？（动物.品种）

Answer 1

您正在寻找base关键字：

public class Dog : Animal {

    public new DogBreed? Breed {

        get {

            // base.Breed refers to the hidden property

            if (base.Breed == "Corgi") return DogBreed.Corgi;

            if (base.Breed == "Pug") return DogBreed.Pug;

            return null;

        }

        set {

            if (value == DogBreed.Corgi) base.Breed = "Corgi";

            else if (value == DogBreed.Pug) base.Breed = "Pug";

            else base.Breed = null;

        }

    }

}