public ActionResult Index(int contentId=-1)
 {
     if (contentId == -1)
         return View();
     Content content = db.Contents.Where(c => c.ID_CO == contentId).Single();
     ContentData[] contentDatas = db.ContentDatas.Where(cd => cd.ID_CO==contentId).ToArray();
     List<String> urls = new List<String>();
     foreach (ContentData cnt in contentDatas)
     {
         urls.Add(cnt.URL);
     }
     ContentView cw = new ContentView(content.CONTENT_TEXT, content.CONTENT_TITLE, urls.ToArray(), contentId);
     return View(cw);
 }
 public ActionResult Index(int contentId = -1)
 {
     if (contentId != -1)
     {
         try
         {
             Content content = db.Contents.Where(c => c.ID_CO == contentId).Single();
             List<ContentData> contentDatas = db.ContentDatas.Where(cd => cd.ID_CO == content.ID_CO).ToList();
             List<String> tagsNames = new List<String>();
             TagsInContent[] tags = db.TagsInContents.Where(t => t.ID_CO == contentId).ToArray();
             foreach (TagsInContent tagsInC in tags)
             {
                 Tag tag = db.Tags.Where(t => t.id == tagsInC.ID_TAG).Single();
                 tagsNames.Add(tag.name);
             }
             ContentView cw = new ContentView(content.CONTENT_TEXT, content.CONTENT_TITLE, contentDatas.ToArray(), contentId, tagsNames.ToArray());
             return View(cw);
         }
         catch (System.InvalidOperationException)
         {
             return View();
         }
     }
     else
         return View();
 }