Difference between new and override

Question

Wondering what the difference is between the following:

Case 1: Base Class

public void DoIt();

Case 1: Inherited class

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Answer 1

virtual: indicates that a method may be overriden by an inheritor

override: overrides the functionality of a virtual method in a base class, providing different functionality.

new: hides the original method (which doesn't have to be virtual), providing different functionality. This should only be used where it is absolutely necessary.

When you hide a method, you can still access the original method by up casting to the base class. This is useful in some scenarios, but dangerous.