how to assign the database date to the calender control in asp.net

Dayrender Event



string StrDate = "Select Dates From Tblallottimepat ient where DID=" + 1;
cmd = new SqlCommand(StrD ate, con);
openconnection( );
sdr = cmd.ExecuteRead er();
while (sdr.Read())
{
DateTime da=Convert.ToDa teTime(sdr[0].ToString());...