[Solved] Grid Ajax (use ADO Entity Framework) - no working

[Jack]

I have grid which does ajax binding.

View

@(Html.Telerik().Grid<TelerikAjaxGrid.Models.Orders>()

    .Name("OrdersGrid")

    .Columns(columns =>

    {

        columns.Bound(c => c.OrderID).Width(200);

        columns.Bound(c => c.ShipName);

        columns.Bound(c => c.ShipAddress);

    })

    .DataBinding(dataBinding => dataBinding.Ajax().Select("_Select", "Home"))

    .Sortable()

    .Pageable()

    .Groupable()

    .Filterable()

)

(I also was inserted all requied component in _Layout.cshtml)

Controller

[GridAction]

public ActionResult _Select()

{

    var _entities = new NorthwindEntities();

    var _orders = _entities.Orders.ToList();

    return View(new GridModel(_orders));

}

The grid shows up, but there is no data in it.??!!

And i find out error with firebug (browse with Firefox) in Console:

POST http://localhost:4646/Customer/_Select

500 Internal Server Error

Regards,
Jack Strong
------------------
My project in attachment (use Northwind db)

[Petur Subev]

Hello Jack,

Basically the exact error message can be seen by examining the response tab (in Firebug) of the request. I assume that the error is caused during the invocation of the action method and is because there is a circular reference in the objects used to databind the Grid. If this is the case, there are several solutions which can be found in the documentation on the Troubleshooting section.

If this is not the error please let us know what is the actual error message so we can investigate further.

Regards,

Pesho
the Telerik team

[Jack]

i was also read a same topic and tried with other db (no table relationship) and GridAjax load success.
(http://blogs.telerik.com/aspnetmvcteam/posts/10-01-25/resolving-circular-references-when-binding-the-mvc-grid.aspx)

Thank you so much for your support!

I'm trying this way.
------------
Regard,
Jack