Defining the main grid

Let's set the basic structure of the Swiper control, as follows:

1. Open the SwiperControl.xaml file.
2. Replace the content with the code marked in bold in the following code block:

<?xml version="1.0" encoding="UTF-8"?>
<ContentView xmlns="http://xamarin.com/schemas/2014/forms" 
             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml" 
             x:Class="Swiper.Controls.SwiperControl">
    <ContentView.Content>
        <Grid>
            <Grid.ColumnDefinitions>
                <ColumnDefinition Width="100" />
                <ColumnDefinition Width="*" />
                <ColumnDefinition Width="100" />
            </Grid.ColumnDefinitions> 

            <!-- ContentView for photo here -->

            <!-- StackLayout for like here -->

            <!-- StackLayout for deny here -->
        </Grid...