$.ajax({
                  url: '@Url.Action("StopMyMethod")',
                  type: 'GET',
                  cache: false,
                  data: { boolValue:true },
                  success: function (data) {
                  alert('success');
                                 },
                  error: function (data) {
                  alert('Error');
                                 }
                  });

Boolean StopOvsPersonalDataDetail = false;
    [HttpGet]
    public ActionResult MyMethod(int id)
    {

        foreach(var a from list)
                {
               if (StopOvsPersonalDataDetail)
                break;
                }
        return View(list);
    }

    [HttpGet]
    public ActionResult  StopMyMethod(Boolean boolValue)
    {
        StopOvsPersonalDataDetail=true;
        return view;
    }