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    copied!<p>So here are two solutions:</p> <p>The first one is with the application bar not being transparent:</p> <pre><code>&lt;Grid x:Name="LayoutRoot" Background="Transparent"&gt; &lt;DrawingSurface x:Name="DrawingSurfaceBackground" Loaded="DrawingSurfaceBackground_Loaded" /&gt; &lt;ScrollViewer Name="LightControl" Height="150" VerticalAlignment="Bottom" Visibility="Collapsed"&gt; &lt;Grid Margin="12,0,12,0"&gt; &lt;Grid.ColumnDefinitions&gt; &lt;ColumnDefinition Width="Auto" /&gt; &lt;ColumnDefinition Width="*" /&gt; &lt;/Grid.ColumnDefinitions&gt; &lt;Grid.RowDefinitions&gt; &lt;RowDefinition Height="Auto"/&gt; &lt;RowDefinition Height="Auto"/&gt; &lt;RowDefinition Height="Auto"/&gt; &lt;/Grid.RowDefinitions&gt; &lt;TextBlock Grid.Column="0" Grid.Row="0" VerticalAlignment="Top" Text="Ambient Light" Style="{StaticResource PhoneTextLargeStyle}" /&gt; &lt;Slider Grid.Column="1" Grid.Row="0" Name="AmbientLightSlider" Minimum="0.0" Maximum="2.0" Value="1.0" ValueChanged="AmbientLightSlider_OnValueChanged" /&gt; &lt;TextBlock Grid.Column="0" Grid.Row="1" VerticalAlignment="Top" Text="Diffuse Light" Style="{StaticResource PhoneTextLargeStyle}" /&gt; &lt;Slider Grid.Column="1" Grid.Row="1" Name="DiffuseLightSlider" Minimum="0.0" Maximum="2.0" Value="1.0" ValueChanged="DiffuseLightSlider_OnValueChanged" /&gt; &lt;TextBlock Grid.Column="0" Grid.Row="2" VerticalAlignment="Top" Text="Specular Light" Style="{StaticResource PhoneTextLargeStyle}" /&gt; &lt;Slider Grid.Column="1" Grid.Row="2" Name="SpecularLightSlider" Minimum="0.0" Maximum="2.0" Value="1.0" ValueChanged="SpecularLightSlider_OnValueChanged" /&gt; &lt;/Grid&gt; &lt;/ScrollViewer&gt; &lt;/Grid&gt; &lt;phone:PhoneApplicationPage.ApplicationBar&gt; &lt;shell:ApplicationBar IsVisible="True" IsMenuEnabled="True"&gt; &lt;shell:ApplicationBarIconButton IconUri="/Toolkit.Content/ApplicationBar.Center.png" Text="Center" Click="Center_Click" /&gt; &lt;shell:ApplicationBarIconButton IconUri="/Toolkit.Content/ApplicationBar.Wireframe.png" Text="Wireframe" Click="Rasterizer_Click" /&gt; &lt;shell:ApplicationBarIconButton IconUri="/Toolkit.Content/ApplicationBar.Center.png" Text="Light" Click="Light_Click" /&gt; &lt;/shell:ApplicationBar&gt; &lt;/phone:PhoneApplicationPage.ApplicationBar&gt; </code></pre> <p>I actually have changed the height of the <code>ScrollViewer</code>: <code>Height="150"</code> so only two sliders will fit and completely removed the opacity from the app bar: <code>Opacity="0"</code>.</p> <p>Now with transparent application bar:</p> <pre><code>&lt;Grid x:Name="LayoutRoot" Background="Transparent"&gt; &lt;DrawingSurface x:Name="DrawingSurfaceBackground" Loaded="DrawingSurfaceBackground_Loaded" /&gt; &lt;ScrollViewer Name="LightControl" Height="150" Margin="0,0,0,70" VerticalAlignment="Bottom" Visibility="Collapsed"&gt; &lt;Grid Margin="12,0,12,0"&gt; &lt;Grid.ColumnDefinitions&gt; &lt;ColumnDefinition Width="Auto" /&gt; &lt;ColumnDefinition Width="*" /&gt; &lt;/Grid.ColumnDefinitions&gt; &lt;Grid.RowDefinitions&gt; &lt;RowDefinition Height="Auto"/&gt; &lt;RowDefinition Height="Auto"/&gt; &lt;RowDefinition Height="Auto"/&gt; &lt;/Grid.RowDefinitions&gt; &lt;TextBlock Grid.Column="0" Grid.Row="0" VerticalAlignment="Top" Text="Ambient Light" Style="{StaticResource PhoneTextLargeStyle}" /&gt; &lt;Slider Grid.Column="1" Grid.Row="0" Name="AmbientLightSlider" Minimum="0.0" Maximum="2.0" Value="1.0" ValueChanged="AmbientLightSlider_OnValueChanged" /&gt; &lt;TextBlock Grid.Column="0" Grid.Row="1" VerticalAlignment="Top" Text="Diffuse Light" Style="{StaticResource PhoneTextLargeStyle}" /&gt; &lt;Slider Grid.Column="1" Grid.Row="1" Name="DiffuseLightSlider" Minimum="0.0" Maximum="2.0" Value="1.0" ValueChanged="DiffuseLightSlider_OnValueChanged" /&gt; &lt;TextBlock Grid.Column="0" Grid.Row="2" VerticalAlignment="Top" Text="Specular Light" Style="{StaticResource PhoneTextLargeStyle}" /&gt; &lt;Slider Grid.Column="1" Grid.Row="2" Name="SpecularLightSlider" Minimum="0.0" Maximum="2.0" Value="1.0" ValueChanged="SpecularLightSlider_OnValueChanged" /&gt; &lt;/Grid&gt; &lt;/ScrollViewer&gt; &lt;/Grid&gt; &lt;phone:PhoneApplicationPage.ApplicationBar&gt; &lt;shell:ApplicationBar IsVisible="True" IsMenuEnabled="True" Opacity="0"&gt; &lt;shell:ApplicationBarIconButton IconUri="/Toolkit.Content/ApplicationBar.Center.png" Text="Center" Click="Center_Click" /&gt; &lt;shell:ApplicationBarIconButton IconUri="/Toolkit.Content/ApplicationBar.Wireframe.png" Text="Wireframe" Click="Rasterizer_Click" /&gt; &lt;shell:ApplicationBarIconButton IconUri="/Toolkit.Content/ApplicationBar.Center.png" Text="Light" Click="Light_Click" /&gt; &lt;/shell:ApplicationBar&gt; &lt;/phone:PhoneApplicationPage.ApplicationBar&gt; </code></pre> <p>Since you ask for the application bar to be transparent the UI element(s), in your case the <code>ScrollViewer</code>, knows that the end of the page is actually where the application bar ends. So by adding 70 margin from bottom: <code>Margin="0,0,0,70"</code> would fix the "on top" problem.</p>
 

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