UWP - FlipView SelectionChanged event example

MainPage.xaml

<Page
    x:Class="UniversalAppTutorials.MainPage"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:local="using:UniversalAppTutorials"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    mc:Ignorable="d"
    >
    <RelativePanel Background="MintCream">
        <TextBlock
            x:Name="TextBlock1"
            RelativePanel.AlignBottomWithPanel="True"
            RelativePanel.AlignHorizontalCenterWithPanel="True"
            Margin="15"
            Foreground="Blue"
            FontFamily="MV Boli"
            FontSize="30"
            FontStyle="Italic"
            />
        <FlipView 
            x:Name="FlipView1" 
            Background="Transparent" 
            Padding="25"
            SelectionChanged="FlipView1_SelectionChanged"
            >
            <!-- Item 1 -->
            <Viewbox MaxWidth="200" MaxHeight="200">
                <SymbolIcon Symbol="BackToWindow" Foreground="Red"/>
            </Viewbox>

            <!-- Item 2 -->
            <Viewbox MaxWidth="200" MaxHeight="200">
                <SymbolIcon Symbol="Calendar" Foreground="Blue"/>
            </Viewbox>

            <!-- Item 3 -->
            <Viewbox MaxWidth="200" MaxHeight="200">
                <SymbolIcon Symbol="Directions" Foreground="Violet"/>
            </Viewbox>

            <!-- Item 4 -->
            <Viewbox MaxWidth="200" MaxHeight="200">
                <SymbolIcon Symbol="Emoji" Foreground="HotPink"/>
            </Viewbox>

            <!-- Item 5 -->
            <Viewbox MaxWidth="200" MaxHeight="200">
                <SymbolIcon Symbol="Favorite" Foreground="OrangeRed"/>
            </Viewbox>
        </FlipView>
    </RelativePanel>
</Page>

MainPage.xaml.cs

using Windows.UI.Xaml.Controls;


namespace UniversalAppTutorials
{
    public sealed partial class MainPage : Page
    {
        public MainPage()
        {
            this.InitializeComponent();
        }

        private void FlipView1_SelectionChanged(object sender, SelectionChangedEventArgs e) {
            // Get the FlipView instance
            FlipView flipView = (FlipView)sender;

            // Get the FlipView number of items
            int items = flipView.Items.Count;

            // Get the FlipView selected item position
            int position = flipView.SelectedIndex + 1;

            // Display the selected item position on TextBlock
            TextBlock1.Text = "Item " + position + " of " + items;
        }
    }
}