where condition is drpDate in sql 2005

Question

I Found an error  when the time of filling in grid.parameter passing as datetimein sql 2005.i dont know how to convert datetime to string and remaining parameters passing as string.give example with code...  SqlDateTime overflow. Must be between 1/1/1753 12:00:00 AM and 12/31/9999 11:59:59 PM.