How to add shadow effects card for UWP Kanban control

        <Grid.Resources>
                <DataTemplate x:Key="TagsTemplate">
                <Border Background="#FFEDEDED" CornerRadius="2" >
                    <TextBlock Text="{Binding}" HorizontalAlignment="Center"
                       TextTrimming="CharacterEllipsis" Margin="10,1,10,1"
                       FontSize="10" VerticalAlignment="Center"
                       Foreground="#FF454545" />
                </Border>
            </DataTemplate>
            <!--Default Card Template-->
            <DataTemplate x:Key="DefaultKanbanCardTemplate">
                <Grid Loaded="Grid_Loaded">
                    <Canvas x:Name="Shadow"></Canvas>
                    <Border BorderBrush="{Binding Tag.CardStyle.BorderBrush ,RelativeSource={RelativeSource Mode=TemplatedParent}}"
                BorderThickness="{Binding Tag.CardStyle.BorderThickness ,RelativeSource={RelativeSource Mode=TemplatedParent}}"
                CornerRadius="{Binding Tag.CardStyle.CornerRadius ,RelativeSource={RelativeSource Mode=TemplatedParent}}"
                MinHeight="100"
                Background="{Binding Tag.CardStyle.Background ,RelativeSource={RelativeSource Mode=TemplatedParent}}"
                MaxHeight="300"
                Height="Auto"
                Margin="0,6,0,6"
                >
…
 
                    </Border>
                </Grid>
            </DataTemplate>
        </Grid.Resources>
 
        <kanban:SfKanban x:Name="Kanban" CardTemplate="{StaticResource DefaultKanbanCardTemplate}"
                         ItemsSource="{Binding Tasks}" CardTapped="Kanban_CardTapped" AutoGenerateColumns="True">
 
        </kanban:SfKanban>

          private void Grid_Loaded(object sender, RoutedEventArgs e)
        {
            Grid rootGrid = sender as Grid;
            Canvas shadow = null;
            Border border = null;
            foreach (UIElement child in rootGrid.Children)
            {
                if (child is Canvas)
                {
                    shadow = child as Canvas;
                }
                else
                {
                    border = child as Border;
                    //To apply selected card style.
                    if (previousCard != null && (previousCard.Content as KanbanModel).Equals(rootGrid.DataContext as KanbanModel))
                    {
                        rootGrid.Background = new SolidColorBrush(Colors.Orange);
                        ((child as Border).FindName("KANBAN_Title") as TextBlock).Foreground = new SolidColorBrush(Colors.Red);
                        ((child as Border).FindName("KANBAN_Description") as TextBlock).Foreground = new SolidColorBrush(Colors.Red);
                    }
                }
            }
 
            var compositor = ElementCompositionPreview.GetElementVisual(border).Compositor;
            SpriteVisual spriteVisual = compositor.CreateSpriteVisual();
            spriteVisual.Size = new Vector2((float)border.ActualWidth, (float)border.ActualHeight);
            var dropShadow = compositor.CreateDropShadow();
            dropShadow.Offset = new Vector3(10, 10, 10);
            dropShadow.Color = Colors.LightGray;
            spriteVisual.Shadow = dropShadow;
 
            ElementCompositionPreview.SetElementChildVisual(shadow, spriteVisual);
        }