[英]Convert Derived Class to Base Generic Class
I have a set up approximately like this:我有一个大致像这样的设置:
public class A { ... }
public class A<T> : A { ... }
public class B<T> : A<T> { ... }
public class C : B<SomeType> { ... }
I am iterating over a list of type A, and I want to check if something is of type B, and if it is, convert it to... B... I can see how it already poses a problem of how am I gonna get the type... but if I cannot do that, what are my other alternatives?我正在遍历 A 类型的列表,我想检查某物是否属于 B 类型,如果是,则将其转换为...... B...... 我可以看到它已经提出了我的问题会得到类型...但如果我不能那样做,我还有什么其他选择?
EDIT: To clarify, B contains a method I'd like to use that A does not contain as it simply has no need for it... I want to check which of the objects on that list are of type B so that I can run this method on them编辑:为了澄清,B 包含一个我想使用的方法,但 A 不包含它,因为它根本不需要它......我想检查该列表中的哪些对象是 B 类型的,以便我可以在他们身上运行这个方法
EDIT 2: I forgot to mention the A in the middle earlier... sorry for the confusion编辑 2:我之前忘了在中间提到 A ......抱歉造成混淆
I want to check which of the objects on that list are of type B
我想检查该列表中的哪些对象属于 B 类型
Then introduce a type B into your type hierarchy.然后将类型 B 引入到您的类型层次结构中。 Currently you don't have a type
B
, you've got B<SomeType>
which is a different type.目前你没有类型
B
,你有B<SomeType>
,这是一种不同的类型。 so所以
public class A { ... }
public abstract class B : A { ... }
public class B<T> : B { ... }
public class C : B<SomeType> { ... }
Or declare type method you want on an interface或者在接口上声明你想要的类型方法
public class A { ... }
public class A<T> : A { ... }
public interface IB
public class B<T> : A<T>, IB { ... }
public class C : B<SomeType> { ... }
Then for any A you can check if it is IB
然后对于任何 A 你可以检查它
is IB
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