IQueryable fails with Ajax DataSource but works with Server

[Masoud]

Hi,
I am using MVC Kendo (2013.1.319.340) with MVC 4 under dot.net 4.5.  LLBLGen is the O/R Mapper in version 3.5.  LLBLGen Pro to Linq is used (not EF or LinqToSQL). 

Binding a Kendo MVC Grid using Server Binding, sort/filter/group/page work fine.  Controller code is as follows:

public ActionResult Index()
{
    LinqMetaData metaData = new LinqMetaData(_adapter);
    return View(metaData.Mandant);
}

metaData.Mandant returns an IQueryable provided by LLBLGen.

When I try the same access using Ajax Binding, only Paging information is transformed properly to the IQueryable provider.  Controller code is

public ActionResult Query(DataSourceRequest request)
{
return Json(_db.GetMandant().ToDataSourceResult(request, entity => new
{
entity.AktualisiertAm,
entity.AktualisiertVon
}), JsonRequestBehavior.AllowGet);
}

Here only paging information is actually applied in the query emitted by LLBLGen.  Filter/Sort/Group settings are not being applied to the query at hand. 
Here is an older thread that seems to point to a similar issue (http://www.telerik.com/community/forums/aspnet-mvc/grid/sorting-with-llblgen-linqmetadata.aspx).  The lnk to the solution suggested (http://www.telerik.com/community/forums/aspnet-mvc/general/datetime-sorting-problem.aspx) is no longer valid.

Thank you for your help on this isse!

[Atanas Korchev]

Hello,

 You have probably forgotten to include kendo.aspnetmvc.min.js.

Regards,
Atanas Korchev
Telerik

[Masoud]

Hi Atanas!

The binding of the scripts was ok.  The issue was the missing binding attribute for DataSourceRequest

public ActionResult Query(DataSourceRequest request)
vs.
public ActionResult Query([DataSourceRequest]DataSourceRequest request)

Thank you for your help.