Sending mail in C#.net using Task shedular at specific time

Question

How I can send mails at specific time in C#.net windows applications using Task shedular.

The process in such a way that date and time will be in sql server database  table , program code in windows application , in code the datetime obj is created 

and set to match with table column value, if value match with current system time , task shedular should send automatically.. pls can any body help me..