How to convert type int[] to int?[]

Question

I\'m using a linq query to output an int array. But I need to pass this into a method that only accepts int?[].

So after searching on ways to convert int[] to int?[] I

Answer 1

How about this using Cast<> and a type constraint making T a struct:

public static IEnumerable ToArrayOrNull(this IEnumerable seq)
    where T : struct
{
    if (seq.Count() == 0)
        return null;

    return seq.Cast().ToArray();
}