nullreferenceexception

I know its been asked numerous of times about threading and null.reference.exception and what not and i have read every each of solutions provided, but i still couldn't figuring it out some of those nasty exceptions. i just started coding in .net and i have no clue whats wrong with my code. as...

I have a Monthcalendar from which a date is chosen and a button is clicked. I can store this and have tried formatting it a number of ways so it can be used in an SQL statement to list all incidents which were recorded after that date. PrivateSub MonthCalendar1_DateSelected(ByVal sender...