LINQ Max() with Nulls

Question

I have a list that contains a bunch of Points (with an X and Y component).

I want to get the Max X for all points in the list, like this:

double max          


        

Answer 1

If you want to provide a default value for X of a null point:

pointList.Max(p => p == null ? 0 : p.X)

Or to provide a default for an empty list:

int max = points.Where(p => p != null)
                .Select(p => p.X)
                .DefaultIfEmpty()
                .Max();