LINQ Single() Exception for 0 or multiple items

Question

I have some IEnumberable collection of items. I use .Single() to find a specific object in the collection.

I choose to use Single()

Answer 1

I wouldn't recommend using the try/catch in this scenario, because using exceptions to make logical decisions is resource expensive.

I would recommend using SingleOrDefault(), and check if the result is null. If it is. Do your creation.

Answer 2

What you want is SingleOrDefault()

The "or default" actually means it returns null (for reference types) or whatever the default would be for a non-reference type. You'll need to new-up an object to take its place.