public HttpResponseMessage updateArticleUnit(String id, Models.MstArticleUnit unit)
        {
            try
            {
                var units = from d in db.MstArticleUnits where d.Id == Convert.ToInt32(id) select d;
                if (units.Any())
                {
                    var updateUnit = units.FirstOrDefault();
                    updateUnit.ArticleId   = unit.ArticleId;
                    updateUnit.UnitId      = unit.UnitId;
                    updateUnit.Multiplier  = unit.Multiplier;
                    updateUnit.IsCountUnit = unit.IsCountUnit;

                    db.SubmitChanges();

                    return(Request.CreateResponse(HttpStatusCode.OK));
                }
                else
                {
                    return(Request.CreateResponse(HttpStatusCode.NotFound));
                }
            }
            catch
            {
                return(Request.CreateResponse(HttpStatusCode.BadRequest));
            }
        }
        public Int32 insertArticleUnit(Models.MstArticleUnit unit)
        {
            try
            {
                Data.MstArticleUnit newUnit = new Data.MstArticleUnit();
                newUnit.ArticleId   = unit.ArticleId;
                newUnit.UnitId      = unit.UnitId;
                newUnit.Multiplier  = unit.Multiplier;
                newUnit.IsCountUnit = unit.IsCountUnit;

                db.MstArticleUnits.InsertOnSubmit(newUnit);
                db.SubmitChanges();

                return(newUnit.Id);
            }
            catch
            {
                return(0);
            }
        }