Date parameter in rdlc report using datetimepicker

Hi,

I have a rdlc report in c# with only one parameter "StudentTime". I want to filter my data using datetimepicker in reportviewer.

 parms[0] = new ReportParameter("stdTime_toDate", dateTimePicker1.Value.ToString("yyyy-MM-dd"));

Is this right way to do?

And also my data stored in database using datetimepicker in student table.

student_id    studentTime

1                 2013-09-20 09:43:26.000

Can anyone help me?

thanks in advance