Refresh datagrid from viewmodel fils MVVM WPF

Question

1.00/5 (2 votes)

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Hi,

I have MainWindow and Window Add , ViewModel and ViewModelADD..l'addition of new Customer is correct in database, but the refresh of DataGrid no ! and when i finish l'addition , the Window ADD doesn't close !

ViewModel:

ViewModelADD:

How can I fix it?
to add new Customer..and refresh the DataGrid, and when the Customer added..the Window ADD close

Thanks,

What I have tried:

C#

<pre>private static ViewModel1 instance = new ViewModel1();
        public static ViewModel1 Instance { get { return instance; } }
		
		
		    private void add(object obj)
        {
			Add addView = new Add();
            addView.DataContext = new ViewModelADD(loadDataBinding);
            addView.Show();
		}
		
		 private ObservableCollection<Custmor> _loadDataBinding;     

        public ObservableCollection<Custmor> loadDataBinding
        {
            get
            {
                return _loadDataBinding;
            }

            set
            {
                _loadDataBinding = value;
                OnPropertyChanged("loadDataBinding");
            }
        }

C#

<pre> public ViewModelADD(ObservableCollection<Custmor> loadDataBinding)
        {
            CustomerToAddObject = new Custmor();

            addCustomer1 = new RelayCommand(ADDFunction);
        }
		
		
		 private ICommand addCustomer1;      
          public ICommand AddCustomer1
        {
            get { return addCustomer1; }
        }

       
        private void ADDFunction(object obj)
        {
            using (Test1Entities context = new Test1Entities())
            {
                context.Custmor.Add(customerToAddObject);
                context.SaveChanges();
                MessageBox.Show("Customer a été ajouté avec succès!");
            }

            ViewModel1.Instance.loadDataBinding.Add(customerToAddObject);

Posted 23-May-17 5:25am

ThabetMicrosoft

Updated 24-May-17 1:22am

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ThabetMicrosoft · Accepted Answer · 2017-05-24T01:22:00

I found the solution,
first I modify the ViewModel:

C#

private void add(object obj)
        {        
            Add addView = new Add();
            addView.DataContext = new ViewModelADD(addView,loadDataBinding);
            addView.Show();
        }

then i modify the ViewModelADD:

C#

<pre> private readonly Window _window;       
        private readonly ObservableCollection<Custmor> _loadDataBinding;
		
		 public ViewModelADD(Window window,ObservableCollection<Custmor> loadDataBinding)
        {
            CustomerToAddObject = new Custmor();

            addCustomer1 = new RelayCommand(ADDFunction);
            _window = window;
            _loadDataBinding = loadDataBinding;
        }
		
		
		   private void ADDFunction(object obj)
        {
            using (Test1Entities context = new Test1Entities())
            {
                context.Custmor.Add(customerToAddObject);
                context.SaveChanges();
                MessageBox.Show("Customer a été ajouté avec succès!");
            }
                                
            _loadDataBinding.Add(customerToAddObject);
            _window.Close();           
        }

It works correct now,