public async Task<IHttpActionResult> PutroomContent(int roomId,int accessoryId, roomContent roomContent)
        {
            if (!ModelState.IsValid)
            {
                return BadRequest(ModelState);
            }

            if (roomId != roomContent.roomId || accessoryId != roomContent.accessoryId)
            {
                return BadRequest();
            }

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

            try
            {
                await db.SaveChangesAsync();
            }
            catch (DbUpdateConcurrencyException)
            {
                if (!roomContentExists(roomId, accessoryId))
                {
                    return NotFound();
                }
                else
                {
                    throw;
                }
            }

            return StatusCode(HttpStatusCode.NoContent);
        }
        public async Task<IHttpActionResult> PostroomContent(roomContent roomContent)
        {
            if (!ModelState.IsValid)
            {
                return BadRequest(ModelState);
            }

            db.roomContent.Add(roomContent);

            try
            {
                await db.SaveChangesAsync();
            }
            catch (DbUpdateException)
            {
                if (roomContentExists(roomContent.roomId, roomContent.accessoryId))
                {
                    return Conflict();
                }
                else
                {
                    throw;
                }
            }

            return CreatedAtRoute("DefaultApi", new { id = roomContent.roomId }, roomContent);
        }