public static class IocKernel
    {
        private static StandardKernel _kernel;
        private static int _sendingChainDepth;
        private static FormBase _latestViewModel;

        public static void SendTo<T>() where T: FormBase
        {
            if (_kernel == null)
                return;
            _sendingChainDepth++;
            T newViewModel = _kernel.Get<T>();
            if (_latestViewModel == null)
                _latestViewModel = newViewModel;
            _sendingChainDepth--;
            if (_sendingChainDepth != 0)
                return;
            Messenger.Default.Send(new SetMainViewModel { ViewModel = _latestViewModel });
            _latestViewModel = null;
        }
...