Example of how to use Feature Toggle in your Xamarin.Forms applications.

MainPage.xaml

<?xml version="1.0" encoding="utf-8"?>
<ContentPage xmlns="http://xamarin.com/schemas/2014/forms" 
             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml" 
             xmlns:d="http://xamarin.com/schemas/2014/forms/design" 
             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
             mc:Ignorable="d" 
             x:Class="DemoFeatureToggle.MainPage">
    <StackLayout>
        <Button Text="Verify" Clicked="Handle_Clicked" x:Name="BtnVerify" />
        <Label x:Name="LblResult" HorizontalTextAlignment="Center"/>
    </StackLayout>
</ContentPage>