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I'm getting a warning from ReSharper about a call to a virtual member from my objects constructor. Why would this be something not to do?

I can't decide which approach is better for creating objects with a large number of fields (10+) (all mandatory) the constructor approach of the getter/setter. Constructor at least you enforce that all the fields are set. Java Beans easier to see which variables are being set instead of a huge list. The builder pattern DOES NOT seem suitable here as all the fields are mandatory and the builder requires you put all mandatory parameters in the builder constructor.

I was wondering why in java constructors are not inherited? You know when you have a class like this: