T in class? AddRange ICollection?

Question

I try to do static class, add to icollection but i got some issues i cant seem to overcome. that is how i get so i can pass a ICollection in the method? cause T is that say

Answer 1

If I understand correctly you want to add a IEnumerable to an empty collection.

Wouldn't it be easier to just do:

ICollection collection = new List(GetIEnumerableOfMyObject());

Or even:

ICollection collection = GetIEnumerableOfMyObject().ToList();