What's the Best Way to Add One Item to an IEnumerable?

Question

Here\'s how I would add one item to an IEnumerable object:

//Some IEnumerable object
IEnumerable arr = new string[] { \"ABC\", \"DEF\"         


        

Answer 1

You're assigning an array to an IEnumerable. Why don't you use the Array type instead of IEnumerable?

Otherwise you can use IList (or List) if you want to change the collection.

I use IEnumerable only for methods params when I need to read and IList (or List) when I need to change items in it.