public void submitBook(long doctorid, long patientid, DateTime booktime)
{
book_info_table tbl = new book_info_table();
tbl.dentist_id = doctorid;
tbl.patient_id = patientid;
tbl.book_time = booktime;
addBook(tbl);
}
public void addBook(book_info_table book)
{
book.book_gen_time = DateTime.Now;
db.book_info_table.InsertOnSubmit(book);
db.SubmitChanges();
}