public IEnumerable <Speaker> Get()
 {
     using (var context = new SignToSeminarDBContext())
     {
         return(context.Speakers.Include(o => o.seminar).ToArray <Speaker>());
     }
 }
 public void Post([FromBody] Speaker speaker)
 {
     using (var context = new SignToSeminarDBContext())
     {
         context.Speakers.Add(speaker);
         context.SaveChanges();
     }
 }
 public void Delete(int id)
 {
     using (var context = new SignToSeminarDBContext())
     {
         var speaker = new Speaker {
             id = id
         };
         context.Speakers.Attach(speaker);
         context.Speakers.Remove(speaker);
         context.SaveChanges();
     }
 }
 public Speaker Get(int id)
 {
     using (var context = new SignToSeminarDBContext())
     {
         var speaker = context.Speakers.Where(o => o.id == id).FirstOrDefault();
         if (speaker != null)
         {
             return(speaker);
         }
         else
         {
             return(null);
         }
     }
 }
 public UsersController(SignToSeminarDBContext context)
 {
     _context = context;
 }