[英]Select items from a collection based on the sub-class type in the collection
class A {}
class B : A {}
class C : A {}
ICollection<A> myCollection;
var myresults = myCollection.Where(item => item.GetType() is C);
Given the hierarchy above the where predicate effectively does nothing. 给定上面的层次结构,谓词实际上什么也没做。
How can I structure the where predicate to return all items of type C from the collection? 如何构造where谓词以返回集合中所有C类型的项目?
而不是在哪里可以使用OfType<TResult>
var myresults = myCollection.OfType<C>();
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