how can i fill an arraylist with a HTML Table

I want to fill my arraylist with a table on a specific webite that i enter in my textbox

private void btncheck_Click(object sender, RoutedEventArgs e)
        {
            string url = kassaUI.pagina.Text;
            HtmlWeb web = new HtmlWeb();
            HtmlDocument document = web.Load(url);
            HtmlNode[] nodes = document.DocumentNode.SelectNodes("//tbody").ToArray();
            ArrayList arlist = new ArrayList();
        }

how do i now get the fetched data into the arraylist?