Question

I’m having trouble getting a listview to bind to a ViewModel. The code for my ViewModel is as follows:

class MyViewModel : INotifyPropertyChanged
{
    ObservableCollection<MyDataItemViewModel> dataToShow;

    public ObservableCollection<MyDataItemViewModel> DataToShow
    {
        get
        {
            return dataToShow;  // A breakpoint here is never hit
        }
    }

    public MyViewModel(ObservableCollection<MyDataItemViewModel> toShow)
    {
        dataToShow = toShow;   // A breakpoint here reveals that there is data

        RegisterCommands();
    }
...

My XAML is as follows:

    <ListView   Name="DataView"
                ...
                ItemsSource="{Binding MyViewModel.DataToShow}">

        <ListView.View>
            <GridView>
                <GridViewColumn Header="Number"
                        ...
                        DisplayMemberBinding="{Binding Path=Details.Number}" />
                ...

The code for the MyDataItemViewModel class returns a public class called Details, which contains a number of properties, including Number.

The screen displays fine, but without any data.

Answer 1

Try this:

ItemsSource="{Binding DataToShow}"