public void PutCanvas(PD_Canvas item, int id)
        {
            var _p = _db.PD_Processes.Find(id);
            if (User.Identity.Name.Equals(_p.LockedBy))
            {

                _p.CanvasHeight = item.CanvasHeight;
                _p.CanvasWidth = item.CanvasWidth;
                    _db.SaveChanges();
               
            }
        }
 public IHttpActionResult getCanvas(int id)
 {
     PD_Canvas c = new PD_Canvas();
     PD_Process s = _db.PD_Processes.Find(id);
     c.CanvasWidth = s.CanvasWidth;
     c.CanvasHeight = s.CanvasHeight;
     return Ok(c);
 }
        public void PutCanvas(PD_Canvas item, int id, int sid)
        {
            var _p = _db.PD_Processes.Find(id);
            if (User.Identity.Name.Equals(_p.LockedBy))
            {
                var subject = _db.PD_Subjects.Find(id, sid);

                if (subject != null)
                {
                    if(subject.CanvasHeight != item.CanvasHeight && subject.CanvasWidth != item.CanvasWidth)
                    subject.CanvasWidth = item.CanvasWidth;
                    subject.CanvasHeight = item.CanvasHeight;
                    
                    _db.SaveChanges();
                }
                else
                {
                    throw new HttpResponseException(HttpStatusCode.NotFound);
                }
            }
        }
 public IHttpActionResult getCanvas(int id, int sid)
 {
     PD_Canvas c = new PD_Canvas();
     PD_Subject s = _db.PD_Subjects.Find(id, sid);
     c.CanvasWidth = s.CanvasWidth;
     c.CanvasHeight = s.CanvasHeight;
     return Ok(c);
 }