public void open_sub_apps() { try { frm_tooltip.doc d = new frm_tooltip.doc(); foreach (KeyValuePair <string, string> kv in this.sub_apps) { d.add_voice(kv.Value, $"window.external.open_form('{kv.Key}')"); } frm_tooltip.show(d, for_scripting: this); } catch { } }