how to update system date in asp

Question

hi,

i created a gridview in ASP, where as i kept one column as "last updated date"  of an employee.

in aspx  code i wrote like dis  cmd.Parameters.Add("@LastUpdatedDate", DateTime.Now);

 

 wen ever i inserting data the gridview is showing current date and time. 

wen ever i try to update the date and time are not yet changing.

 

dis is the  query i wrote 

SelectCommand="SELECT * FROM [Employees] order by lastupdateddate desc"

UpdateCommand="update [Employees] Set [EmpId]=@EmpId,[FirstName]=@FirstName,[MI]=@MI,[LastName]=@LastName,[DOB]=@DOB,[DOJ]=@DOJ,[EmailP]=@EmailP,[EmailW]=@EmailW,[PhoneM]=@PhoneM,[PhoneH]=@PhoneH,[PhoneW]=@PhoneW,[Address]=@Address,[Country]=@Country,[State]=@State,[City]=@City where [EmpId]=@EmpId" 

 

pls reply,