SegmentedControlSamplePage.cs

<?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:local="clr-namespace:SegmentedControlSample" 
             x:Class="SegmentedControlSample.SegmentedControlSamplePage">
    <StackLayout Padding="0,5">

       <local:SegmentedBarControl ValueChanged="Handle_ValueChanged" 
                             x:Name="segment" 
                             AutoScroll="true"
                             TextColor="Black" 
                             SelectedTextColor="Navy"
                             SelectedLineColor="Navy"/>

      <Label FontAttributes="Bold" 
             FontSize="Large" 
             x:Name="ItemSelectedText" 
             HorizontalOptions="CenterAndExpand" 
             VerticalOptions="CenterAndExpand"/>
    </StackLayout>
</ContentPage>