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

In the first case you are hiding the definition in the parent class. This means that it will only be invoked when you are dealing with the object as the child class. If you cast the class to its parent type, the parent's method will be invoked. In the second instance, the method is overridden and will be invoked regardless of whether the object is cast as the child or parent class.