title: The requested URL did not return Json
body: <p>Here is my grid which is in MyPartialView:</p>
  
  <pre><code>@(Html.Telerik().Grid&lt;MyClass&gt;()
          .Name("GridMyClass")
          .ToolBar(commands =&gt; commands.Insert().ButtonType(GridButtonType.BareImage))
              .DataKeys(keys =&gt; keys.Add(a =&gt; a.Id))
                      .ClientEvents(events =&gt; events.OnError("Grid_onError"))
          .Columns(columns =&gt;
          {
              columns.Bound(p =&gt; p.Name).Width(110);
              columns.Bound(p =&gt; p.Timestamp).Width(110).Format("{0:MM/dd/yyyy}");
              columns.Command(commands =&gt;
              {
                  commands.Edit().ButtonType(GridButtonType.BareImage);
                  commands.Delete().ButtonType(GridButtonType.BareImage);
              }).Width(180).Title("Edit");
          })
          .DataBinding(dataBinding =&gt;
          {
              dataBinding.Ajax()
              .Select("Ge", "MyClass")
              .Update("Edit", "MyClass")
              .Delete("Delete", "MyClass")
              .Insert("Insert", "MyClass");
          })
      .Pageable()
      .Sortable()
      //.Scrollable()
      //.Groupable()
      //.Filterable()
      //.Editable(editing =&gt; editing.Mode(GridEditMode.InLine))
  </code></pre>
  
  <p>)</p>
  
  <p>Here is one of the controller methods (the others are similar):</p>
  
  <pre><code>public ActionResult Delete()
      {
          //delete
  
          //get the model
  
          List&lt;MyClassTemplate&gt; ct = new List&lt;MyClassTemplate&gt;();
          //fill ct
          return PartialView("MyPartialView", new GridModel&lt;MyClassTemplate&gt; { Data = ct });
      }
  </code></pre>
  
  <p>And another controller method:</p>
  
  <pre><code>public ActionResult MyPartialView()
      {
          List&lt;MyClassTemplate&gt; ct = new List&lt;MyClassTemplate&gt;();
          //fill ct 
          return PartialView(ct);//new GridModel(ct)
      }
  </code></pre>
  
  <p>When I edit a row in the grid and click on the image to save the edited row, I step with breakpoints throught the controller methods. Everything is fine. ct has ok value. However, I get alert "Error! The requested URL did not return Json.". Which url did not return json? How to resolve this?</p>