public ActionResult Add(pb_HashTag model) { bn_HashTag bnHashTag = new bn_HashTag(); string iconPath = (string)Session["IconPath"]; if (iconPath != null) { model.IconPath = iconPath; } //Check image //if (iconPath == "" || iconPath == null) //{ // ViewBag.Message = "Phải có ít nhất một hình ảnh."; // return View(model); //} //Check hashtag if (bnHashTag.IsExists(model.TagName)) { ViewBag.Message = "This tag has been create, choose another one, please!"; return(View(model)); } if (ModelState.IsValid) { bnHashTag.Create( model.UserId, EHashtag_Type.Private, model.TextName, model.TagName, model.Icon, model.Description, model.UserTypes); //clear iconpath; Session["IconPath"] = null; return(RedirectToAction("Index")); } return(View(model)); }