Ajaxify your forms... that is pretty vague.
If you want to submit a form asynchronously, you could use $.post() to post to a separate controller action.
Example:
In the view:
$.post('<%= Url.Action("DoAjaxCall") %>', $('form').serialize(),
function (data) {
alert(data.Message);
}
, "json");
In your controller:
public ActionResult DoAjaxCall(YourModel model)
{
return Json(new { Message = "Your ajax call is working!" });
}
That is what I'm using in some of my forms at least.
P.S.: I wrote this in the stackoverflow text editor so it's not really tested. But as an outline, it should work.