public MainMenu AddSubMenu(SubMenu subMenu)
{
if (string.IsNullOrEmpty(subMenu.Name))
{
throw new ArgumentNullException(nameof(subMenu.Name), "No name set for submenu.");
}
subMenu.SetRoot(this);
_subMenus.Add(subMenu.Name, subMenu);
return(this);
}
public MainMenu(Func <NodeBase, string, Task <HandlerResult> > defaultHandler = null)
{
_selectedMenu = new SubMenu(string.Empty, defaultHandler);
_selectedMenu.SetRoot(this);
_subMenus.Add(_selectedMenu.Name, _selectedMenu);
}