MainPage.xaml

<ContentPage xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
             xmlns:local="clr-namespace:JournalApp.Models"
             x:Class="JournalApp.MainPage">
    <StackLayout>
        <Button Text="Add Entry" Clicked="AddEntryButton_Clicked" />
        <CollectionView ItemsSource="{Binding JournalEntries}">
            <CollectionView.ItemTemplate>
                <DataTemplate>
                    <StackLayout>
                        <Label Text="{Binding Date, StringFormat='{0:MM/dd/yyyy HH:mm}'}" />
                        <Label Text="{Binding Text}" />
                        <CollectionView ItemsSource="{Binding Pictures}">
                            <CollectionView.ItemTemplate>
                                <DataTemplate>
                                    <Image Source="{Binding .}" HeightRequest="100" WidthRequest="100">
                                        <Image.GestureRecognizers>
                                            <TapGestureRecognizer Command="{Binding BindingContext.ImageTappedCommand, Source={RelativeSource AncestorType={x:Type local:JournalEntry}}}" CommandParameter="{Binding .}" />
                                        </Image.GestureRecognizers>
                                    </Image>
                                </DataTemplate>
                            </CollectionView.ItemTemplate>
                        </CollectionView>
                        <StackLayout Orientation="Horizontal">
                            <Button Text="Edit" Clicked="EditEntryButton_Clicked" CommandParameter="{Binding .}" />
                            <Button Text="Delete" Clicked="DeleteEntryButton_Clicked" CommandParameter="{Binding .}" />
                        </StackLayout>
                    </StackLayout>
                </DataTemplate>
            </CollectionView.ItemTemplate>
        </CollectionView>
    </StackLayout>
</ContentPage>