public async Task <IActionResult> Edit(int id, [Bind("Id,Age,FirstName,LastName,Email,SerialNumber")] Submisssion submisssion)
        {
            if (id != submisssion.Id)
            {
                return(NotFound());
            }

            if (ModelState.IsValid)
            {
                try
                {
                    _context.Update(submisssion);
                    await _context.SaveChangesAsync();
                }
                catch (DbUpdateConcurrencyException)
                {
                    if (!SubmisssionExists(submisssion.Id))
                    {
                        return(NotFound());
                    }
                    else
                    {
                        throw;
                    }
                }
                return(RedirectToAction(nameof(Index)));
            }
            return(View(submisssion));
        }
        public async Task <IActionResult> Create([Bind("Id,Age,FirstName,LastName,Email,SerialNumber")] Submisssion submisssion)
        {
            /*  if (!serialNumber.ValidedSerialsNumber(submisssion.SerialNumber))
             * {
             *    return NotFound("Serial number does not exist!");
             *
             * }*/
            if (ModelState.IsValid)
            {
                _context.Add(submisssion);
                await _context.SaveChangesAsync();

                return(RedirectToAction(nameof(Index)));
            }

            return(View(submisssion));
        }