Question

I’m wondering, what happens when you do following:

Collection.Insert(55, "Input")

The collection contains 20 items, so 19 would be the last index.
This doesn’t work, I get the expected outofrangeException.
But when I do :

Collection.Insert(20, "Input")

That works without a problem, even though it is 1 out of the collection.

Any thoughts on this.

Thanks in advance.

Answer 1

If index is equal to Count, item is added to the end of Collection(Of
T).

Stated from the MSDN.

So basically if you insert at index = count, its like an append, you add after the last item.