Why can’t I create an abstract constructor on an abstract C# class?

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You cannot have an abstract constructor because abstract means you must override it in any non-abstract child class and you cannot override a constructor.

If you think about it, this makes sense, since you always call the constructor of the child class (with the new operator) and never the base class.

Generally speaking, the only way in C# to enforce a specific constructor signature is by using the new() generic constraint, which enforces the existence of a parameterless constructor for the type parameter.

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