static void Main(string[] args) { Console.WriteLine("Program start"); ControlGroup html = new ControlGroup("html"); ControlGroup body = new ControlGroup("body"); ControlGroup div = new ControlGroup("div"); html.AddControl(body); body.AddControl(div); div.AddControl(new Control("input", "text", "username")); div.AddControl(new Control("br")); StringBuilder sb = html.ParseHtml(); WriteCode(sb); CreateHtmlFile(sb); Console.ReadLine(); }