Class DerivedClass
Inherits BaseClass
Public Overrides Function CalculateShipping(ByVal Dist As Double, _
ByVal Rate As Double) As Double
' Call the method in the base class and modify the return value.
Return MyBase.CalculateShipping(Dist, Rate) * 2
End Function
End Class
下面的列表描述对使用 MyBase 的限制: