如何检测接口和抽象class之间的区别？
How to detect the difference between an interface and an abstract class?
给定以下类型：
public interface Interface { }
public abstract class Abstract { }
这是为什么：
typeof(Interface).IsAbstract == true;
注意 IsInterface 存在以检查它是否是接口：
typeof(Abstract).IsInterface == false;
来自docs：
The IsAbstract property returns true in the following cases:
The current type is abstract; that is, it cannot be instantiated, but can only serve as the base class for derived classes. In C#,
abstract classes are marked with the abstract keyword; in Visual
Basic, they are marked with the MustInherit keyword.
The current type is an interface.
所以接口被认为是抽象的，因为它不能被实例化。
如果要确定类型是抽象class，您应该执行以下操作：
typeof(YourType).IsClass && typeof(YourType).IsAbstract
给定以下类型：
public interface Interface { }
public abstract class Abstract { }
这是为什么：
typeof(Interface).IsAbstract == true;
注意 IsInterface 存在以检查它是否是接口：
typeof(Abstract).IsInterface == false;
来自docs：
The IsAbstract property returns true in the following cases:
The current type is abstract; that is, it cannot be instantiated, but can only serve as the base class for derived classes. In C#, abstract classes are marked with the abstract keyword; in Visual Basic, they are marked with the MustInherit keyword.
The current type is an interface.
所以接口被认为是抽象的，因为它不能被实例化。
如果要确定类型是抽象class，您应该执行以下操作：
typeof(YourType).IsClass && typeof(YourType).IsAbstract