private void CtxmPullUpSubMenu(MenuItem menu, bool?isEndDot = null)
{
if (menu.Items.Count == 1)
{
var submenu = (menu.Items[0] as MenuItem);
menu.ToolTip = submenu.ToolTip ?? (submenu.Header is FrameworkElement ?
(submenu.Header as FrameworkElement).Tag : MenuUtil.DeleteAccessKey(submenu.Header as string, true));
menu.Command = submenu.Command;
(menu.CommandParameter as EpgCmdParam).Data = (submenu.CommandParameter as EpgCmdParam).Data;
(menu.CommandParameter as EpgCmdParam).ID = (submenu.CommandParameter as EpgCmdParam).ID;
menu.Items.Clear();
}
if (isEndDot != null)
{
CtxmPullUpSubMenuSwitchEndDot(menu, (bool)isEndDot);
}
}