public async Task <IActionResult> PutTannotation(short id, Tannotation tannotation)
        {
            if (id != tannotation.TannotationId)
            {
                return(BadRequest());
            }

            _context.Entry(tannotation).State = EntityState.Modified;

            try
            {
                await _context.SaveChangesAsync();
            }
            catch (DbUpdateConcurrencyException)
            {
                if (!TannotationExists(id))
                {
                    return(NotFound());
                }
                else
                {
                    throw;
                }
            }

            return(NoContent());
        }
        public async Task <ActionResult <Tannotation> > PostTannotation(Tannotation tannotation)
        {
            _context.Tannotation.Add(tannotation);
            try
            {
                await _context.SaveChangesAsync();
            }
            catch (DbUpdateException)
            {
                if (TannotationExists(tannotation.TannotationId))
                {
                    return(Conflict());
                }
                else
                {
                    throw;
                }
            }

            return(CreatedAtAction("GetTannotation", new { id = tannotation.TannotationId }, tannotation));
        }