Asp.net Mvc3 webgrid and paging

I am trying to learn Asp.net mvc. I know its different from forms and i need to change my way of thinking probably. My problem is about webgrid . When i add webgrid to my page and hit search button with Post it renders table with pager and so on. But links on the pager is not posting form they are just links and i lost all my form's data.

Controller has two index methods one is for get and other is for post. For get i do nothing, I just create new viewmodel in this case Search class and set it to view. For my post method i grab my view model do search and set filled viewmodel to view.

problem : webgrid renders pager as links so it will enter to the Index for get but since it is not a post request i dont have any form fields filled and my search will not provide the very same result set.

Maybe example code can explain it better.

View:

<form action="" method="post">

Esas no : @Html.TextBoxFor(x=>x.Name)
Yil : @Html.TextBoxFor(x=>x.Year)

<input type="submit" value="Search" />

<hr />
@ViewBag.Message
<hr />

@{ var grid = new WebGrid(Model.Results,rowsPerPage:5);}

@grid.GetHtml(tableStyle:"table",htmlAttributes:new {id="tbl"} )

</form>

Here is My Controller: Search occures in Index Post method and it has just my viewmodel class.

    private ISearchContext _sc;

    public  MyController(ISearchContext sc)
    {
        _dc = dc;
    }

    //
    // GET: /Dava/

    public ActionResult Index()
    {
        var search = new Search();
        ViewBag.Message = "";
        return View(search);
    }

    [HttpPost]
    public ActionResult Index(Search search)
    {

        Search sres = _dc.SearchFromRepository(search);
        ViewBag.Message = String.Format("Count:{0} ",sres.Results.Count);
        return View(sres);
    }

Search model Class is like:

public class Search
{
    public int Year { get; set; }
    public string Name { get; set; }


    public IList<Item> Results { get; set; }

    public Search()
    {
        Results = new List<Item>();
    }
}