Does T [] use IList <T>?

Question

I have a class constructor that takes IList<IElement>as an argument.

When creating a new instance of the class, I can pass IElement[]instead IList<IElement>how is this possible?

Answer 1

An array with an element type Tcomes from IList<T>.

It does not appear in the metadata in mscorlib.dll, but an inheritance relationship is created at runtime in the common language runtime. C # and the CLR know the type of array and consider it on purpose.