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

int?[] is an array of int?. All you need is change lambda in Select, to return an int?:

int?[] vids2 = new[] { "", "1", "2", "3" }
    .Where(x => !String.IsNullOrWhiteSpace(x))
    .Select(x => (int?)Convert.ToInt32(x))
    .ToArray();

If you already have an int[], you can use Cast() to cast the elements to int?

int[] ints = { 1, 2, 3 };
int?[] nullableInts = ints.Cast().ToArray();