title: Mvc Id doesn't get submitted
body: <p>i have a dropdown as seen below, trying to pass my id to controller but always comes as 0</p>
  
  <pre><code> &lt;div class="form-group"&gt;
          @Html.LabelFor(model =&gt; model.SagsTypersId, "SagsTypeId1", htmlAttributes: new { @class = "control-label col-md-2" })
          &lt;div class="col-md-10"&gt;
              @Html.DropDownList("SagsTypeId1", null, htmlAttributes: new {
             @class = "selectpicker",
             data_show_subtext = "true",
             data_live_search = "true"
         })
              @Html.ValidationMessageFor(model =&gt; model.SagsTypersId, "", new { @class = "text-danger" })
          &lt;/div&gt;
      &lt;/div&gt;
  </code></pre>
  
  <p>heres is my controller Get.</p>
  
  <pre><code> public ActionResult Create()
      {
  
          ViewBag.SagsTypeId1 = new SelectList(db.SagsTypers, "Id", "SagsTyper");
  
          return View();
      }
  </code></pre>
  
  <p>here is controller Post</p>
  
  <pre><code> public ActionResult Create(Sag sag)
      {
  
          if (ModelState.IsValid)
          {
              db.Sags.Add(sag);
              db.SaveChanges();
              return RedirectToAction("Index");
          }
  
  
          return View(sag);
      }
  </code></pre>
  
  <p>to sum it up, my issue is that the Sags.SagsTypersId is 0 when trying to submit. Can't seem to locate the error. </p>
  
  <p>Best regards
  Johnny.</p>