After clicking button, Autocomplete textbox should not be empty in MVC3

mvc3 textbox retaining after button click.

my view code.

<div style="float: left">

States Filter :

</div>

<div style="float: left; padding-left: 10px">



@Html.TextBox("Statestxt")

<div>

<div style="padding-left: 10px; float: left">

<input type="image" value="submit" src="../../Images/FilterBrowse.gif" alt="submit Button" />

</div>



My controller:


public ActionResult AutocompleteAsync(string term)


{

var suggestions = from s in Adm.states


select s.state_name;

var namelist = suggestions.Where(n => n.ToLower().StartsWith(term.ToLower()));


return Json(namelist, JsonRequestBehavior.AllowGet);


}




after clicking submit button textbox should not be empty.

Thanks.