ViewA.xaml is a view to display the announcement list and details of the selected announcement.

ViewA.xaml

<Grid >
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="1*"/>
        </Grid.ColumnDefinitions>
        <Grid.RowDefinitions>
            <RowDefinition Height="2*"  MaxHeight="200" ScrollViewer.VerticalScrollBarVisibility="Auto"/>
            <RowDefinition Height="2*"  ScrollViewer.VerticalScrollBarVisibility="Auto" ScrollViewer.HorizontalScrollBarVisibility="Auto"/>
        </Grid.RowDefinitions>


        <ListBox x:Name="lbNewsAnnouncement" Grid.Column="0" Grid.Row="0" ItemsSource="{Binding NewsAnnouncement.Items}" ScrollViewer.VerticalScrollBarVisibility="Auto" >
            <ListBox.ItemTemplate>
                <DataTemplate >
                    <TextBlock Text="{Binding Title}">
                        <TextBlock.InputBindings>
                            <MouseBinding Gesture="LeftClick" Command="{Binding RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type ListBox}}, Path=DataContext.SelectArticle}" CommandParameter="{Binding Id}" />
                        </TextBlock.InputBindings>
                    </TextBlock>
                </DataTemplate>
            </ListBox.ItemTemplate>
        </ListBox>
        <ScrollViewer Grid.Column="0" Grid.Row="1" ScrollViewer.HorizontalScrollBarVisibility="Visible" ScrollViewer.CanContentScroll="True">
        <StackPanel HorizontalAlignment="Left" Margin="10"  >
                <TextBlock x:Name="txtJudul" Text="{Binding Announcement.Title}" FontSize="28"/>
                <TextBlock x:Name="txtImageurl" Text="{Binding Announcement.ImageUrl}" Visibility="Hidden"/>
                <TextBlock x:Name="txtPublishDate" Text="{Binding Announcement.PublishedDate}" />
                <Image x:Name="artilceImg" Source="{Binding Announcement.ImageUrl}" MaxWidth="300" MaxHeight="350"/>
               
                <wpf:HtmlLabel x:Name="htmlContent" Text="{Binding Announcement.Contents}" />
          
            </StackPanel>

        </ScrollViewer>
    </Grid>