Interface Implementation and Inheritance

Base class methods

Suppose we have a MultimediaFile class and we want to implement the IDownloadable interface that has a method:

interface IDownloadable
{
	void Download();
}

If MultimediaFile derives from a class that already has a Download() method with the same signature and return type as it was declared in IDownloadable, then we don’t have to implement that method, because the base class already has it: