title: Multiple Actions, Same View and Validation Errors
body: <p>Let's assume ModelState errors occurred in an action called AddComment(). AddComment does not have it's own view,  so instead of returning View(), we must return View("Blog"). We can't use RedirectToAction("Blog") because we loose our ModelState errors. The problem is what if the Blog view is bound to a Blog model?!? Let's assume we have an Index() action whose job it is to retrieve the Blog's data and returns View("Blog",BlogModel). We would have to copy the contents of Index(), where the BlogModel is retrieved, to our AddComment() action. Else, returning View("Blog") from AddComment will give us a null exception when the Blog view is being parsed. Is this the only way to maintain ModelState errors between actions that use the same view? I just started learning MVC and I'm still learning the right way to layout my code so please enlighten me. </p>
  
  <pre><code>    [HttpGet]
      public ActionResult Index()
      {
          BlogEntry RecentBlogEntry;
  
          //get the most recent blog entry
          RecentBlogEntry = m_BlogEntryDataService.GetRecentBlogEntry();
  
          return View(RecentBlogEntry);
      }
  
      [HttpPost]
      public ActionResult AddComment(BlogComment NewComment)
      {
          if (ModelState.IsValid)
              m_CommentDataService.AddComment(NewComment);
  
          //get the most recent blog entry - AGAIN
          return View("Index", m_BlogEntryDataService.GetRecentBlogEntry());
      }
  </code></pre>