Determine sequence contains no element using LINQ [duplicate]

Question

Possible Duplicate:
LINQ: Max or Default?

I have some LINQ to filter DateTime vars.

List<DateTime> lst1 = new List<DateTime>();   //.... add DataTime here  var d = lst1.Where(q => q <= DateTime.Now).Max(); 

And if I have no matched item the exceptions occurs.

I need to get empty d or at least null and I don't need exception here at all.

How do I can fix it?

Thank you!

Answer 1

Try

var d = lst1.Where(q => q <= DateTime.Now).DefaultIfEmpty().Max(); 

Your result will now contain DateTime.MinValue if there are no matches