A property or procedure that does not override a base class property or procedure has a default setting of NotOverridable. To override a property or procedure, the overriding property or procedure ...

Specifies that a declared programming element redeclares and hides an identically named element, or set of overloaded elements, in a base class. The main purpose of shadowing (which is also known as ...

公用的方法的缺省的值为NotOverridable。 (2)Overrides--允许用户重载一个基本类的属性或者是方法。 (3)NotOverridable(缺省)--防止一个属性或方法在继承类中被重载。 (4)MustOverride--当该关键字被使用时，需要继承的类一定要把该属性或方法重载，其中方法的表述只包括Sub ...

这个类只能被继承 Overridable: Overridable 修饰符--答应类的一个属性或方法可以被Override。Public 方法缺省是 NotOverridable Overrides: Overrides 修饰符--Override基类的一个属性或方法 NotOverridable: NotOverridable 修饰符 (缺省)- -禁止类的一个属性或方法被Override ...