First the code:
<ListView ItemsSource="{Binding DataTransferModel.Output}" Background="Transparent" Margin="0" VerticalContentAlignment="Top" AlternationCount="2" Name="lvOutput" ScrollViewer.VerticalScrollBarVisibility="Auto" Grid.Row="2">
<ListView.ItemTemplate>
<DataTemplate>
<StackPanel Orientation="Horizontal" Margin="0,1">
<UserControls:OutputTextBox Text="{Binding Data, Mode=OneWay}"
IsReadOnly="True"
Grid.Row="2"
TextWrapping="WrapWithOverflow"
SelectedValue="{Binding Path=DataContext.SelectedOutput,
Mode=TwoWay,
UpdateSourceTrigger=PropertyChanged,
RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type Grid}}
}"
/>
</StackPanel>
</DataTemplate>
</ListView.ItemTemplate>
</ListView>
And the problem is that the property Data
on the OutputTextBox control comes from the list, but the property SelectedOutput
should come from the main DataContext the ViewModel. And the property SelectedOutput
should be the same for every entry in the list. But currently it dosn't work. :(