Datetimepicker selection changed

Question

Use this...if is column null i want to show this value in selection changed

 

private DateTime emptydate = DateTime.Parse("2018-01-01 00:00:00");

 

 

How to setup this line for selection changed

 

vrijemeodjaveDateTimePicker.Value = string.IsNullOrEmpty(vrijemeodjaveDateTimePicker.Value == emptydate) ? ((object)DBNull.Value : vrijemeodjaveDateTimePicker.Value;

 If is value in sql is null to show this value 01-01-2018 00:00:00