Allow null DateTime? variable comparison with DateTime variable in C#

Question

I have two variables of type DateTime and DateTime?

DateTime StartDateFromDb;
DateTime? StartDateFromFilter;

if(StartDateFromDb.Date == StartDateFromFilter.Date);

While comparing, .Date is not allowingfor StartDateFromFilter of type allow null

Thanks in advance

``StartDateFromFilter.Value.Date`` – Ehsan Sajjad Mar 28 '16 at 10:06 — Ehsan Sajjad, Mar 28 '16 at 10:06
Related? http://stackoverflow.com/q/13673117/447156 – Soner Gönül Mar 28 '16 at 10:14 — Soner Gönül, Mar 28 '16 at 10:14

M.S. · Answer 1 · 2016-03-28T10:12:48.680

3

Use the Value property available as

  if(StartDateFromFilter.HasValue && StartDateFromDb.Date == StartDateFromFilter.Value.Date)

PS: Better to add a null value check. StartDateFromFilter must have a value.(HasValue is true when DateTime? type variable is not null)

edited Mar 28 '16 at 10:12

answered Mar 28 '16 at 10:07

M.S.

score 2 · Answer 2 · answered Mar 28 '16 at 10:11

2

For any nullable type , you can use value property. StartDateFromFilter.Value.Date

In your case , this should work fine

if(StartDateFromDb.Date == StartDateFromFilter.Value.Date)
//// in this case .Date is not allowingfor StartDateFromFilter

answered Mar 28 '16 at 10:11

prabin badyakar

2 Answers2