<Grid>
        <VerticalStackLayout Spacing="25" Padding="30,0" VerticalOptions="Center">
            <Image
                Source="dotnet_bot.png"
                SemanticProperties.Description="Cute dot net bot waving hi to you!"
                HeightRequest="200"
                HorizontalOptions="Center" />
            <Label 
                Text="Hello, World!"
                SemanticProperties.HeadingLevel="Level1"
                FontSize="32"
                HorizontalOptions="Center" />
            
            <Label 
                Text="Welcome to .NET Multi-platform App UI"
                SemanticProperties.HeadingLevel="Level1"
                SemanticProperties.Description="Welcome to dot net Multi platform App U I"
                FontSize="18"
                HorizontalOptions="Center" />

            <Button 
                x:Name="CounterBtn"
                Text="Click me"
                SemanticProperties.Hint="Counts the number of times you click"
                Clicked="OnCounterClicked"
                HorizontalOptions="Center" />

        </VerticalStackLayout>
    </Grid>

private void OnCounterClicked(object sender, EventArgs e)
	{
		count++;
		CounterBtn.Text = $"Clicked {count} times";
		
		SemanticScreenReader.Announce(CounterBtn.Text);
	}

<Style x:Key="BaseStyle" TargetType="Element">
        <Setter Property="Shell.BackgroundColor" Value="{AppThemeBinding Light={StaticResource Primary}, Dark={StaticResource Black}}" />
        <Setter Property="Shell.ForegroundColor" Value="{AppThemeBinding Light={StaticResource Primary}, Dark={StaticResource White}}" />
        <Setter Property="Shell.TitleColor" Value="{AppThemeBinding Light={StaticResource LightGray}, Dark={StaticResource White}}" />
        <Setter Property="Shell.DisabledColor" Value="{AppThemeBinding Light={StaticResource LightGray}, Dark={StaticResource DarkGray}}" />
        <Setter Property="Shell.UnselectedColor" Value="{AppThemeBinding Light={StaticResource LightGray}, Dark={StaticResource DarkGray}}" />
        <Setter Property="Shell.NavBarHasShadow" Value="False" />
        <Setter Property="Shell.TabBarBackgroundColor" Value="{AppThemeBinding Light={StaticResource White}, Dark={StaticResource Black}}" />
        <Setter Property="Shell.TabBarForegroundColor" Value="{AppThemeBinding Light={StaticResource Primary}, Dark={StaticResource White}}" />
        <Setter Property="Shell.TabBarTitleColor" Value="{AppThemeBinding Light={StaticResource Primary}, Dark={StaticResource White}}" />
        <Setter Property="Shell.TabBarUnselectedColor" Value="{AppThemeBinding Light={StaticResource LightGray}, Dark={StaticResource DarkGray}}" />
    </Style>
    <Style BasedOn="{StaticResource BaseStyle}" TargetType="ShellItem" ApplyToDerivedTypes="True" />

    <Style TargetType="NavigationPage">
        <Setter Property="BarBackgroundColor" Value="{AppThemeBinding Light={StaticResource Primary}, Dark={StaticResource Black}}" />
        <Setter Property="BarTextColor" Value="{AppThemeBinding Light={StaticResource LightGray}, Dark={StaticResource White}}" />
        <Setter Property="IconColor" Value="{AppThemeBinding Light={StaticResource LightGray}, Dark={StaticResource White}}" />
    </Style>