(ANSWERED) (newbie) I'm confused about ListView ItemSource bindings.

[Maximilien]

(Again, another complete newbie). I'm trying to bind an ItemSource to a ListView. From what I understand, the data should be accessible via a Property. The main Model is "MyModel" it contains a list of items. (eventually will contain lot more data). I'm not sure what incantation I'm missing. Thanks.

public class Item
{
public string Name { get; set; }

public Item(string name)
{
	Name=name;
}

}

public class ItemsList
{
public List Items
{
get; private set;
}

public ItemsList()
{
Items = new List
{
new Item("a"),
new Item("b"),
new Item("c")
};
}
}

public class MyModel
{
private readonly ItemsList _list;

public List Items => \_list.Items;

public MyModel()
{
	\_list = new ItemsList();
}

}

App.xaml.ca :

protected override void OnStartup(StartupEventArgs e)
{
MainWindow = new MainWindow()
{
DataContext = new MyModel()
};

MainWindow.Show();
base.OnStartup(e);

}

MainWindow :

MyListView.xaml component. :

CI/CD = Continuous Impediment/Continuous Despair

[Richard Deeming]

Maximilien wrote:

<components:MyListView DataContext="MyModel"/>

That line's wrong for a start. The DataContext has already been set for the window, and will be inherited by the MyListView control.

Maximilien wrote:

<ListView Margin="10" ItemsSource="{Binding Items}"/>

That looks correct. Are you getting any binding errors in the output window? XAML data binding diagnostics - Visual Studio (Windows) | Microsoft Learn[^] NB: Your view-models should really implement INotifyPropertyChanged[^], and the collection should be an ObservableCollection<T>[^], so that the binding system can pick up any changes. But at the moment you don't seem to be making any changes, so that's unlikely to be the issue.

---

"These people looked deep within my soul and assigned me a number based on the order in which I joined." - Homer

[Maximilien]

Yeah, I'm using INotifyPropertyChanged and ObservableCollection (did not want to clutter the example) Ohhhh !!! thanks. :rose::rose: Fixed. I read that (passing the modelview to components) on a tutorial: See: [youtube-viewers/MainWindow.xaml at master · SingletonSean/youtube-viewers · GitHub](https://github.com/SingletonSean/youtube-viewers/blob/master/YouTubeViewers.WPF/MainWindow.xaml) And at the end of : [youtube-viewers/YouTubeViewersView.xaml at master · SingletonSean/youtube-viewers · GitHub](https://github.com/SingletonSean/youtube-viewers/blob/master/YouTubeViewers.WPF/Views/YouTubeViewersView.xaml)

CI/CD = Continuous Impediment/Continuous Despair