Question

(Fees is a collection of Fee objects.)

If the Fees collection is empty, I want to assign a default value of 0 to FeeValue.

Below is what I currently do. However, I’d prefer to not new up an instance of Fee. What are some alternative ways to write this? Thanks!

from w in Widgets
select new {
  FeeValue = w.Fees.DefaultIfEmpty(new Fee()).First().Value, // Value is a Double
};

Answer 1

Your questions is a bit confusing, but I think I know what you’re asking…

Something like this:

Widgets
    .Select(w => 
        new 
        {
            FeeValue = w.Fees.Select(f => f.Value).DefaultIfEmpty(yourDefaultValue)
        });