public object UpdateProductCategoryByCategoryId()
 {
     var model = new ProductCategoryInfo();
     model.Id =  Convert.ToInt32(HttpContext.Current.Request.Params["CategoryId"]);
     model.Name = HttpContext.Current.Request.Params["CategoryName"];
     model.Desc = (string)HttpContext.Current.Request.Params["desc"];
     model.BigPicture = HttpContext.Current.Request.Params["BigPicture"];
     model.SmallPicture = HttpContext.Current.Request.Params["SmallPicture"];
     model.MediumPicture = HttpContext.Current.Request.Params["mediumpicture"];
     model.Content = HttpContext.Current.Request.Params["desc"];
     var display = 0;
     if (int.TryParse(HttpContext.Current.Request.Form["DisplayOrder"], out display))
     {
         model.DisplayOrder = display;
     }
     else
     {
         model.DisplayOrder = display;
     }
     //model.ParentId = int.Parse(HttpContext.Current.Request.Form["parentSelect"]);
     IProductCategoryService productCategoryService = new ProductCategoryService();
     return productCategoryService.Update(model);
 }