How to fetch HTML Input Id in code behind ASP.Net MVC ? Either on Controller or on Model? [duplicate]

How to fetch HTML Input Id in code behind ASP.Net MVC ? Either on Controller or on Model ?

view / .cshtml

<button type="submit" id="previewButton" >Preview</button>

JQuery : - This will not be in use.

$("button").click(function ()
    {
        var btn = this.id;
          alert(btn);
   }

In Controller :

[HttpPost]
        public ActionResult New(MyViewModel viewModel, string clickedButton)
        {

            var vm = clickedButton;
            return View(vm);
        }

• MyViewModel

  public string clickedButton { get; set; }