有没有办法从继承的属性中删除属性？ [英] Is there a way to remove attributes from an inherited property?

问题描述

是否可以从继承的属性中删除属性？我认为通过使用 new 关键字，我可以做到这一点...

Is it possible to remove attributes from inherited properties? I thought that by using the new keyword I could do so...

 public class Person
 {
     [Required]
     public string FirstName { get; set; }

     [Required]
     public string LastName { get; set; }
 }

 public class Employee : Person
 {
     [Required]
     public string JobTitle { get; set; }

     public new string FirstName { get; set; }
 }

...但这根本不起作用。这让我感到惊讶，因为特别是 new 用来隐藏继承的成员。

... but this doesnt work at all. This surprises me because the new is specifically there to hide inherited members.

推荐答案

您现在的Employee类有2个FirstName属性，其中一个仍为[必需] ...

Your Employee class now has 2 FirstName properties, one of them is still [Required] ...

直接回答：不，就我所知，您无法删除属性。这将违反替代原则。当雇员为IS-A人员时，将应用Person.FirstName的属性。

Direct answer: No, you cannot remove attributes for as far as I know. That would violate the substitution principle. When an Employee IS-A Person then the properties of Person.FirstName apply.

并且： new 关键字在这里 only 用来禁止显示 X正在隐藏基类成员..警告。它对代码的语义没有任何影响。

And: the new keyword here only serves to suppress the 'X is hiding base class member..' warning. It has no effect whatsoever on the semantics of your code.

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