MainPage.xaml

<Page
    x:Class="XboxUWPApp1.MainPage"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:local="using:XboxUWPApp1"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    mc:Ignorable="d">
    <Page.Resources>
        <DataTemplate x:Key="CustomItemTemplate">
            <StackPanel>
                <StackPanel Orientation="Horizontal" HorizontalAlignment="Stretch" Width="Auto">
                    <TextBlock FontWeight="Bold" HorizontalAlignment="Stretch" Text="Id: " />
                    <TextBlock HorizontalAlignment="Stretch" Text="{Binding Id}" />
                    <TextBlock FontWeight="Bold" HorizontalAlignment="Stretch" Text=" - Name: " />
                    <TextBlock HorizontalAlignment="Stretch" Text="{Binding Name}" />
                </StackPanel>
                <StackPanel Orientation="Horizontal" HorizontalAlignment="Stretch" Width="Auto">
                    <TextBlock FontWeight="Bold" HorizontalAlignment="Stretch" Text="AchievementType: " />
                    <TextBlock HorizontalAlignment="Stretch" Text="{Binding AchievementType}" />
                    <TextBlock FontWeight="Bold" HorizontalAlignment="Stretch" Text=" | ProgressState: " />
                    <TextBlock HorizontalAlignment="Stretch" Text="{Binding ProgressState}" />
                </StackPanel>
            </StackPanel>
        </DataTemplate>
    </Page.Resources>

    <Grid Background="{ThemeResource ApplicationPageBackgroundThemeBrush}">
        <Grid.RowDefinitions>
            <RowDefinition Height="70" />
            <RowDefinition Height="3*" />
            <RowDefinition Height="*" />
        </Grid.RowDefinitions>
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="70" />
            <ColumnDefinition />
            <ColumnDefinition />
            <ColumnDefinition />
        </Grid.ColumnDefinitions>
        <Image Source="Assets\xbox_one_logo.png" VerticalAlignment="Top" />
        <StackPanel Grid.Column="1">
            <TextBlock FontWeight="Black" Text="Press [A] to sign in" Margin="5,10,0,0" />
            <!--<TextBlock FontWeight="Black" Text="Press [Y] to switch users" Margin="5,10,0,0"/>-->
        </StackPanel>
        <TextBlock Grid.Column="2" Grid.ColumnSpan="2" HorizontalAlignment="Right" FontWeight="Black" FontSize="30" Text="Achievement Sample" Margin="0,10,10,0" />
        <ScrollViewer Grid.Row="1" Grid.ColumnSpan="2" VerticalScrollBarVisibility="Auto">
            <StackPanel Margin="5, 10, 5, 0">
                <Button x:Name="btnSignInSilently" Style="{StaticResource buttonStyle1}"  Content="Sign in Silently" Click="btnSignInSilently_Click" />
                <Button x:Name="btnSignIn" Style="{StaticResource buttonStyle1}"  Content="Sign in" Click="btnSignIn_Click" />
                <Button x:Name="btnSwitchUser" IsEnabled="False" Style="{StaticResource buttonStyle1}"  Content="Switch User" Click="btnSwitchUser_Click" />
                <Button x:Name="btnGetAchievements" Style="{StaticResource buttonStyle1}"  Content="Get Achievements" Click="btnGetAchievements_Click" />
                <Button x:Name="btnGetAchievement"  Style="{StaticResource buttonStyle1}" Content="Get Achievement" Click="btnGetAchievement_Click" />
                <Button x:Name="btnWriteEvent"  Style="{StaticResource buttonStyle1}" Content="Write Event" Click="btnWriteEvent_Click" />
            </StackPanel>
        </ScrollViewer>
        <Grid Grid.Row="1" Grid.Column="2" Grid.ColumnSpan="2">
            <ListView ItemsSource="{Binding AllAchievements}" ItemTemplate="{StaticResource CustomItemTemplate}">
            </ListView>
        </Grid>
        <Grid Grid.Row="3" Grid.Column="0" Grid.ColumnSpan="2">
            <Button x:Name="btnToLeaderboardPage"  Style="{StaticResource buttonStyle1}" Content="ToLeaderboardPage" Click="btnToLeaderboardPage_Click" />
        </Grid>
        <Grid Grid.Row="3" Grid.Column="2" Grid.ColumnSpan="2">
            <Grid.RowDefinitions>
                <RowDefinition Height="30" />
                <RowDefinition />
            </Grid.RowDefinitions>
            <TextBlock Text="Message:" FontWeight="Bold" />
            <ListBox Grid.Row="1" x:Name="outputMessage" Foreground="Gray" ScrollViewer.VerticalScrollBarVisibility="Auto" />
        </Grid>
    </Grid>
</Page>