C# : how do you obtain a class' base class?

Question

In C#, how does one obtain a reference to the base class of a given class?

For example, suppose you have a certain class, MyClass, and you want to obtain a

Answer 1

if you want to check if a class is subclass of another you can use is.

if (variable is superclass){ //do stuff }

Docs: https://msdn.microsoft.com/en-us/library/scekt9xw.aspx