public IHttpActionResult PutBloodUnit(int id, BloodUnit bloodUnit)
        {
            if (!ModelState.IsValid)
            {
                return(BadRequest(ModelState));
            }

            if (id != bloodUnit.ID)
            {
                return(BadRequest());
            }

            db.Entry(bloodUnit).State = EntityState.Modified;

            try
            {
                db.SaveChanges();
            }
            catch (DbUpdateConcurrencyException)
            {
                if (!BloodUnitExists(id))
                {
                    return(NotFound());
                }
                else
                {
                    throw;
                }
            }

            return(StatusCode(HttpStatusCode.NoContent));
        }
        public IHttpActionResult PostBloodUnit(BloodUnit bloodUnit)
        {
            if (!ModelState.IsValid)
            {
                return(BadRequest(ModelState));
            }

            db.BloodUnits.Add(bloodUnit);
            db.SaveChanges();

            return(CreatedAtRoute("DefaultApi", new { id = bloodUnit.ID }, bloodUnit));
        }
        public IHttpActionResult GetBloodUnit(int id)
        {
            db.Configuration.ProxyCreationEnabled = false;

            BloodUnit bloodUnit = db.BloodUnits.Find(id);

            if (bloodUnit == null)
            {
                return(NotFound());
            }

            return(Ok(bloodUnit));
        }
        public IHttpActionResult DeleteBloodUnit(int id)
        {
            BloodUnit bloodUnit = db.BloodUnits.Find(id);

            if (bloodUnit == null)
            {
                return(NotFound());
            }

            db.BloodUnits.Remove(bloodUnit);
            db.SaveChanges();

            return(Ok(bloodUnit));
        }