Page with ListView with differend data binding options

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="DataBindingScopeSample.MainPage" xmlns:local="clr-namespace:DataBindingScopeSample;assembly=DataBindingScopeSample" Title="Nine-Nine">
    <!-- Scope is MainPageViewModel, therefore we can set the ItemsSource to its MyItems property -->
    <ListView x:Name="ListOfPeople" ItemsSource="{Binding MyItems}" RowHeight="100">
        <ListView.ItemTemplate>
            <DataTemplate>
                <!-- Here the scope is the ListModel object. That is why we can reference the Title and Image properties -->
                <ImageCell Text="{Binding Title}" ImageSource="{Binding Image}">
                    <!-- WARNING: NOT WORKING! -->
                    <!-- You would expect the binding to HighFiveCommand to just work _but_ the command is a property of
                         MainPageViewModel and not ListModel. And withing the cell, we are scoped to the ListModel -->
                    <!--<ImageCell.ContextActions>
                        <MenuItem Text="Delete" IsDestructive="True" Command="{Binding DeleteCommand}" />
                    </ImageCell.ContextActions>-->


                    <ImageCell.ContextActions>
                        <MenuItem Text="Delete" IsDestructive="True" Command="{Binding Path=BindingContext.DeleteCommand, Source={Reference ListOfPeople}}" CommandParameter="{Binding .}" />
                    </ImageCell.ContextActions>

                    <!-- Alternative way since Xamarin.Forms 4.3, using RelativeSource  -->
                    <!--<ImageCell.ContextActions>
                        <MenuItem Text="Delete" IsDestructive="True" Command="{Binding Source={RelativeSource AncestorType={x:Type local:MainPageViewModel}}, Path=DeleteCommand}" CommandParameter="{Binding .}" />
                    </ImageCell.ContextActions>-->
                </ImageCell>
            </DataTemplate>
        </ListView.ItemTemplate>
    </ListView>
</ContentPage>