Mystery behind System.Array

Question

We know System.Array is a abstract class and whatever DataType[] we use runtime creates some concrete implementation for us somehow (vague though).

Answer 1

You're not seeing any call to that method, because you're invoking it yourself, as weird as that may sound. SZArrayHelper is a CLR wrapper around an array, that implements the IList<T> interface, kinda like the adapter pattern.

From this perspective, it makes sense that collection.Clear invokes SZArrayHelper.Clear directly.

Hans Passant explains this very well here: https://stackoverflow.com/a/11164210/857807