VideoDetailPage.xml

<phone:PhoneApplicationPage
    x:Class="KhanAcademyWp8.Views.VideoDetailPage"
    .....
    shell:SystemTray.IsVisible="True" DataContext="{Binding Video, Mode=OneWay, Source={StaticResource Locator}}">

    <!--LayoutRoot is the root grid where all page content is placed-->
    <Grid x:Name="LayoutRoot" Background="Transparent">
        <Grid.RowDefinitions>
            <RowDefinition Height="Auto"/>
            <RowDefinition Height="*"/>
        </Grid.RowDefinitions>

        <!--TitlePanel contains the name of the application and page title-->
        <StackPanel Grid.Row="0" Margin="12,17,0,28">
            <TextBlock Text="{Binding LocalizedResources.ApplicationTitle, Mode=OneWay, Source={StaticResource LocalizedStrings}}" Style="{StaticResource PhoneTextNormalStyle}"/>
            <TextBlock Text="{Binding Title, Mode=OneWay}" Margin="9,-7,0,0" Style="{StaticResource PhoneTextTitle1Style}" FontSize="{StaticResource PhoneFontSizeLarge}" TextWrapping="Wrap"/>
        </StackPanel>

        <!--ContentPanel - place additional content here-->
        <Grid x:Name="ContentPanel" Grid.Row="1" Margin="12,0,12,0">
            <Grid.RowDefinitions>
                <RowDefinition Height="0.2*"/>
                <RowDefinition Height="0.4*"/>
            </Grid.RowDefinitions>
            
            <ListBox Grid.Row="0">
                <TextBlock Text="{Binding Description, Mode=OneWay}" TextWrapping="Wrap" />
                <TextBlock Text="{Binding Authors, Mode=OneWay}" />
                <TextBlock Text="{Binding Duration, Mode=OneWay}" />

            </ListBox>
            
            <ListBox Grid.Row="1">
                <Button Content="Watch" >
                    <i:Interaction.Triggers>
                        <i:EventTrigger EventName="Click">
                            <cmd:EventToCommand PassEventArgsToCommand="False"
                                                    CommandParameter="{Binding}"
                                                    Command="{Binding Navigate, Mode=OneWay}"
                                                    ></cmd:EventToCommand>
                        </i:EventTrigger>
                    </i:Interaction.Triggers>

                </Button>
            </ListBox>
            
        </Grid>
    </Grid>

</phone:PhoneApplicationPage>