Is there a C# function that checks if a list is empty and doesn't count null as an element?

Question

I am trying to use .Any() to validate if a list of elements is empty but there is a possibility it contains null elements and returns true, which I don't want. Is there a way to validate a list is empty, ignoring nulls?

return salesList.Any() ? salesList : null;

The null values I sometimes have in the list prevent this from ever returning null.

Not really, but that would also fix it. What did you have in mind @RufusL — Jalex, Sep 23 '19 at 19:59

score 13 · Accepted Answer · answered Sep 23 '19 at 19:32

13

Try:

return salesList.Any(item => item != null) ? salesList : null;

This overload of Enumerable.Any will only count the items that will match the predicate. In this case all non-null items.

answered Sep 23 '19 at 19:32

Sefe

13,731
5
42
55

2

@Jalex don't forget to mark this as the answer to toss a couple extra Rep Sefe's way – MichaelM Sep 23 '19 at 20:54

Is there a C# function that checks if a list is empty and doesn't count null as an element?

1 Answers1