Base Class Doesn't Contain Parameterless Constructor?

Question

I\'m making my constructors a bit more strict by removing some of my empty constructors. I\'m pretty new to inheritance, and was perplexed with the error that I got: Base Class

Answer 1

Because if A has no default constructor then the constructor of A2 needs to call base() with the arguments to the constructor of A. See this question: Calling the base constructor in C#