HtmlCustom parent = new HtmlCustom(htmlTable);
        parent.SearchProperties.Add("TagName","TBODY");
        parent.SearchProperties.Add("ClassName","HtmlTag.TBODY");

       var firstchild = parent.GetChildren();
        foreach(var secondchild in firstchild)
        {
            var thrdchild = secondchild.GetChildren();

            foreach (var cells in thrdchild)
            {
                //do sg
            }
        }