public IHttpActionResult PosttTeachingData(tTeachingData tTeachingData)
        {
            if (!ModelState.IsValid)
            {
                return(BadRequest(ModelState));
            }

            db.tTeachingDatas.Add(tTeachingData);

            try
            {
                db.SaveChanges();
            }
            catch (DbUpdateException)
            {
                if (tTeachingDataExists(tTeachingData.SID))
                {
                    return(Conflict());
                }
                else
                {
                    throw;
                }
            }

            return(CreatedAtRoute("DefaultApi", new { id = tTeachingData.SID }, tTeachingData));
        }
        public IHttpActionResult PuttTeachingData(int id, tTeachingData tTeachingData)
        {
            if (!ModelState.IsValid)
            {
                return(BadRequest(ModelState));
            }

            if (id != tTeachingData.SID)
            {
                return(BadRequest());
            }

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

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

            return(StatusCode(HttpStatusCode.NoContent));
        }
        public IHttpActionResult GettTeachingData(int id)
        {
            tTeachingData tTeachingData = db.tTeachingDatas.Find(id);

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

            return(Ok(tTeachingData));
        }
        public IHttpActionResult DeletetTeachingData(int id)
        {
            tTeachingData tTeachingData = db.tTeachingDatas.Find(id);

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

            db.tTeachingDatas.Remove(tTeachingData);
            db.SaveChanges();

            return(Ok(tTeachingData));
        }