public string Put(int id, [FromBody] Enquiry obj)
 {
     // Update changes into database.
     using (CineplexDatabaseContext db = new CineplexDatabaseContext())
     {
         db.Entry(obj).State = EntityState.Modified;
         db.SaveChanges();
         return("Enquiry updated successfully!");
     }
 }
 public string Delete(int id)
 {
     // Delete selected row in the database.
     using (CineplexDatabaseContext db = new CineplexDatabaseContext())
     {
         var obj = db.Enquiries.Where(
             i => i.EnquiryID == id).SingleOrDefault();
         db.Enquiries.Remove(obj);
         db.SaveChanges();
         return("Enquiry deleted successfully!");
     }
 }