datatables export issue while filtering ? using mvc razor...

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jQuery

DataTable

MVC4

I been trying from couple of days to bind my view part with controller in razor style and i done to a level well everything working cool but i'm stuck now & any clue is appreciated .

My mvc controller returns something like

public ActionResult Listings(string id)
{
// my code to build list
return View(//My List);
}

In cshtml :

@foreach(WebApp.Models.PersonModel item in Model)
          {
          <tr>
              <td>@item .ContactPerson</td>
         </tr>
            }

I am loading/sorting even exporting also fine with wonderful tabletools but not as expected .

Problem : When i mention a search criteria like name say 'jeff' i get contatcperson names with jeff and i try to export to pdf/excel but i get all records which are loaded into datatable exported not filtered ones? is this a bug with DT or any thing i need to correct from my end ?

PS : i have done filter based export when i am using sAajxSource etc with controller returning JSON but now its not the case you can clearly understand

Thank you