public ActionResult AddComment(string commentText, string contentID)
        {
            if (Session["username"] == null)
            {
                return(RedirectToAction("SessionExpired"));
            }

            var cID = ""; int i = 0;

            while (contentID[i] >= 48 && contentID[i] <= 57)
            {
                cID += contentID[i];
                i++;
            }
            ViewData["ContentID"] = cID;
            if (commentText == "" || commentText == null)
            {
                return(PartialView("_Comment", CRUD.GetCommentsOfAPost(Convert.ToInt32(cID))));
            }

            CRUD.AddComment(Convert.ToInt32(cID), Session["username"].ToString(), commentText);
            return(PartialView("_Comment", CRUD.GetCommentsOfAPost(Convert.ToInt32(cID))));
        }