Checks to ensure that an object of a remote or abstract interface type can be cast to a desired type 检查以确保一个远程的或者抽象接口类型的对象可以被造型成一个需要的类型。
The explicit base interfaces of an interface type must be at least as accessible as the interface type itself 接口类型的显式基接口必须至少与接口类型本身具有同样的可访问性。
Although this is the default interface type for the class interface , you can apply the attribute value explicitly 虽然这是类接口的默认接口类型,但也可以显式地应用该属性值。
If a type description describes a com class , it retrieves the type description of the implemented interface types 如果类型说明描述com类,则它将检索已实现的接口类型的类型说明。
You can then refer to implementing objects as that interface type and call whatever methods exist on that interface 然后就可以按照介面类型引用实作此介面的物件,并呼叫这个介面中存在的任何方法。