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

M.S. · Accepted Answer · 2016-03-28 10:12:48Z

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)

answered Mar 28, 2016 at 10:07

M.S.

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Comments

prabin badyakar · Accepted Answer · 2016-03-28 10:11:13Z

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, 2016 at 10:11

prabin badyakar

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