avalonia/AvaloniaApplication1/Views/UpdateSmesharik.axaml

<UserControl xmlns="https://github.com/avaloniaui"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
             mc:Ignorable="d" d:DesignWidth="800" d:DesignHeight="450"
             x:Class="AvaloniaApplication1.UpdateSmesharik"
			 xmlns:vm="using:AvaloniaApplication1.ViewModels"
			 x:DataType="vm:UpdateSmesharikViewModel">
	<StackPanel>
		<StackPanel>
			<Button Content="Назад" Command="{Binding Back}"/>
		</StackPanel>
		<StackPanel Orientation="Horizontal">
			<StackPanel VerticalAlignment="Center" HorizontalAlignment="Center">
				<Image Source="{Binding ImageSmesh}" Width="100" Height="100"/>
				<TextBlock Text="Имя:" Margin="0 5"/>
				<TextBox Text="{Binding Smesh.Name}"/>
				<TextBlock Text="Возраст:" Margin="0 5"/>
				<TextBox Text="{Binding Smesh.Age}" />
				<TextBlock Text="Пол: " Margin="0 5"/>
				<ComboBox ItemsSource="{Binding Genders}" SelectedItem="{Binding Smesh.GenderNavigation}">
					<ComboBox.ItemTemplate>
						<DataTemplate>
							<TextBlock Text="{Binding Title}"/>
						</DataTemplate>
					</ComboBox.ItemTemplate>
				</ComboBox>
				<TextBlock Text="Животное:" Margin="0 5"/>
				<TextBox Text="{Binding Smesh.Animal}" />
				<TextBlock Text="Качества:" Margin="0 5"/>
				<ComboBox ItemsSource="{Binding Property}" SelectedItem="{Binding SelectedProperty}" Width="150">
					<ComboBox.ItemTemplate>
						<DataTemplate>
							<TextBlock Text="{Binding Title}"/>
						</DataTemplate>
					</ComboBox.ItemTemplate>
				</ComboBox>

				<Button Content="Изменить фото смешарика" Command="{Binding Image}"/>
				<Button Content="Сохранить" Command="{Binding Save}"/>

			</StackPanel>
			<ListBox ItemsSource="{Binding Properties}" Width="150" Height="300">
				<ListBox.ItemTemplate>
					<DataTemplate>
						<StackPanel Orientation="Horizontal">
							<Button Content="-" Command="{Binding $parent[UserControl].((vm:UpdateSmesharikViewModel)DataContext).DeleteProperty}" CommandParameter="{Binding Id}"/>
							<TextBlock Text="{Binding Title}" Foreground="Black"/>
						</StackPanel>
					</DataTemplate>
				</ListBox.ItemTemplate>
			</ListBox>
			
		</StackPanel>
	</StackPanel>

</UserControl>