How to display an image depending on the passed value?

Question

C++ / C#

I have 2 enum color and shape. Objects have fields in which values ​​from Enum. My code, when clicked, can get these values ​​​​in string. How can I output appropriate images depending on the values ​​received? Is there a way without using a switch to be easy to add to old enums and add new enums?