How to make if statement inside linq

Question

I have following statement

Select(g => new AssembledPartsDTO
{
..
..
    References = g.SelectMany(entry => entry.References).OrderBy(t => t).ToList()
..
..
}

How I can add if References.count == 0 than Add("??") to References?

Answer 1

Use ?: Operator

References.count > 0 ? References : new List<string>(){"??"}

How about that

Answer 2

Use a ternary operator in your LINQ expression.

You could do something like this;

References = (g.SelectMany(entry => entry.References).Count() == 0)
   ? g.SelectMany(entry => entry.References).OrderBy(t => t).ToList() : null;