BgEngine.Controllers.PostController.Edit C# (CSharp) Method

        public ActionResult Edit(Post post, int[] selectedtags)
        {
            Post posttoupdate = PostServices.FindAllEntities(p => p.PostId == post.PostId, null, "Tags").FirstOrDefault();
            if (TryUpdateModel(posttoupdate, "", null, new string[] { }))
            {
                try
                {
                    UpdateModel(posttoupdate, "", null, new string[] { });
                    BlogServices.UpdatePost(posttoupdate, selectedtags);
                    return RedirectToAction("Index");
                }
                catch (DataException)
                {
                    ModelState.AddModelError("", Resources.AppMessages.Error_Saving_Changes);
                }
                catch (ApplicationValidationErrorsException ex)
                {
                    foreach (string str in ex.ValidationErrors)
                    {
                        ModelState.AddModelError("", str);
                    }
                }
            }
            ViewBag.ImageId = new SelectList(ImageServices.FindAllEntities(null, null, null), "ImageId", "FileName", post.ImageId);
            ViewBag.CategoryId = new SelectList(CategoryServices.FindAllEntities(null, null, null), "CategoryId", "Name", post.CategoryId);
            ViewBag.UserId = new SelectList(UserServices.FindAllEntities(null, null, null), "UserId", "Username", post.UserId);
            ViewBag.Tags = TagServices.FindAllEntities(null, o => o.OrderBy(t => t.TagName), null).ToDictionary<Tag, int, string>(t => t.TagId, t => t.TagName);
            return View(posttoupdate);
        }