How to set DateTime to null

Question

Using C#. I have a string dateTimeEnd.

If the string is in right format, I wish to generate a DateTime and assign it to eventCustom.DateTimeEnd

Answer 1

This line:

eventCustom.DateTimeEnd = dateTimeEndResult = true ? (DateTime?)null : dateTimeEndResult;

is same as:

eventCustom.DateTimeEnd = dateTimeEndResult = (true ? (DateTime?)null : dateTimeEndResult);

because the conditional operator ? has a higher precedence than the assignment operator =. That's why you always get null for eventCustom.DateTimeEnd. (MSDN Ref)