ASP.NET MVC ActionLink and post method

You can use jQuery to do a POST for all your buttons. Just give them the same CssClass name.

Use "return false;" at the end of your onclick javascript event if you want to do a server side RedirectToAction after the post otherwise just return the view.

Razor Code

@using (Html.BeginForm())
{
    @Html.HiddenFor(model => model.ID) 
    @Html.ActionLink("Save", "SaveAction", "MainController", null, new { @class = "saveButton", onclick = "return false;" })
}

JQuery Code

$(document).ready(function () {
        $('.saveButton').click(function () {
            $(this).closest('form')[0].submit();
        });
    });

C#

[AcceptVerbs(HttpVerbs.Post)]
public ActionResult SaveAction(SaveViewModel model)
{
    // Save code here...

    return RedirectToAction("Index");
    //return View(model);
}

You can't use an ActionLink because that just renders an anchor <a> tag.
You can use a jQuery AJAX post.
Or just call the form's submit method with or without jQuery (which would be non-AJAX), perhaps in the onclick event of whatever control takes your fancy.

If you're using ASP MVC3 you could use an Ajax.ActionLink(), that allows you to specify a HTTP Method which you could set to "POST".