Change parameter used in datatables ajax url.Action on Ajax.reload

This post shows you How to Change parameter used in datatables ajax url.Action on Ajax.reload.

You need to get url request get data.

var url = "Product/GetProductByCategoryId?categoryId=" + $('#ddlCategory option:selected').val();

then reload the table by call your jquery datatables.net

$('#table').DataTable().ajax.url(url).load();