Does Array.ToArray<>() return the original array if it is the same type?

Question

I deal with a framework on a daily basis where we sometimes provide methods that accept IEnumerable as a parameter in order to show user

Answer 1

You will get a new copy of the array if there is one or more element in it. For empty arrays, you might get the same array back, at least in .NET 5:

Console.WriteLine(Object.ReferenceEquals(Array.Empty(), Array.Empty().ToArray()));

This returns true.