C#•2y ago

❔ my delegate event is not raising the event

i defined a event in my CustomerViewModel to pass the data to my main viewModel and raise a new event when gets there. i checked internet for a solution for this to gets working but did not find a answer yet

   public partial class CustomerListViewModel : ObservableObject
    {
        public CustomerListViewModel()
        {

customerCollection = new ObservableCollection<Customer>();
Customer jacob = new Customer("Jacob", "Woord", "Urk");


          

customerCollection.Add(jacob);
           


        }

        
       public event Action<Guid> PlaceOrderRequested = delegate { };
        
        [RelayCommand]
        void PlaceOrder(Customer customer)
        {
            PlaceOrderRequested(customer.CustomerId);
        }

   public partial class CustomerListViewModel : ObservableObject
    {
        public CustomerListViewModel()
        {

customerCollection = new ObservableCollection<Customer>();
Customer jacob = new Customer("Jacob", "Woord", "Urk");


          

customerCollection.Add(jacob);
           


        }

        
       public event Action<Guid> PlaceOrderRequested = delegate { };
        
        [RelayCommand]
        void PlaceOrder(Customer customer)
        {
            PlaceOrderRequested(customer.CustomerId);
        }

namespace viewModelBinding
{
    public partial class MainWIndowViewModel : ObservableObject
    {
        //intialize every vieModel
        private CustomerListViewModel customerListViewModel = new CustomerListViewModel();
        
        private OrderListViewModel    orderListViewModel = new OrderListViewModel();
        

        private Timer timer = new Timer(5000);
        public MainWIndowViewModel()
        {
            customerListViewModel.PlaceOrderRequested += CustomerListViewModel_PlaceOrderRequested;
            currentViewModel = new OrderListViewModel();
            timer.Elapsed += (s, e) => NotificationMessage = "Na 5 seconden word de huidige tijd neergzet: " + DateTime.Now.ToLocalTime() + " Kukulukuu";
            timer.Start();
        }

        private void CustomerListViewModel_PlaceOrderRequested(Guid obj)
        {
            orderListViewModel.CustomerId = obj;
            CurrentViewModel = orderListViewModel;
        }

        [ObservableProperty]
        object currentViewModel;

        [ObservableProperty]
        string notificationMessage;

namespace viewModelBinding
{
    public partial class MainWIndowViewModel : ObservableObject
    {
        //intialize every vieModel
        private CustomerListViewModel customerListViewModel = new CustomerListViewModel();
        
        private OrderListViewModel    orderListViewModel = new OrderListViewModel();
        

        private Timer timer = new Timer(5000);
        public MainWIndowViewModel()
        {
            customerListViewModel.PlaceOrderRequested += CustomerListViewModel_PlaceOrderRequested;
            currentViewModel = new OrderListViewModel();
            timer.Elapsed += (s, e) => NotificationMessage = "Na 5 seconden word de huidige tijd neergzet: " + DateTime.Now.ToLocalTime() + " Kukulukuu";
            timer.Start();
        }

        private void CustomerListViewModel_PlaceOrderRequested(Guid obj)
        {
            orderListViewModel.CustomerId = obj;
            CurrentViewModel = orderListViewModel;
        }

        [ObservableProperty]
        object currentViewModel;

        [ObservableProperty]
        string notificationMessage;

3 Replies

Tvde1•2y ago

are you sure PlaceOrder() is called anywhere? Urk btw 😂

JWoordOP•2y ago

y sure the place order is called in my view and its working, it just never gets to the mainVieModel to get raised. Yes im from Urk 🙂

Accord•2y ago

Was this issue resolved? If so, run /close - otherwise I will mark this as stale and this post will be archived until there is new activity.

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❔ my delegate event is not raising the event