avalonia/AvaloniaApplication1/Views/RedistrationPage.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.RedistrationPage"
			 xmlns:vm="using:AvaloniaApplication1.ViewModels"
			 x:DataType="vm:RegistrationPageViewModel">
	<StackPanel HorizontalAlignment="Center" VerticalAlignment="Center">
		<TextBlock Text="Фамилия:" Margin="0 5"/>
		<TextBox Text="{Binding Surname}" Watermark=" Введите фамилию"/>
		<TextBlock Text="Имя:" Margin="0 5"/>
		<TextBox Text="{Binding Name}" Watermark="Введите имя"/>
		<TextBlock Text="Отчеcтво:" Margin="0 5"/>
		<TextBox Text="{Binding Patronymic}" Watermark="Введите отчество"/>

		<TextBlock Text="Выберете пол: " Margin="0 5"/>
		<ComboBox ItemsSource="{Binding GenderList}" SelectedItem="{Binding SelectedGender}">
			<ComboBox.ItemTemplate>
				<DataTemplate>
					<TextBlock Text="{Binding Title}"/>
				</DataTemplate>
			</ComboBox.ItemTemplate>
		</ComboBox>

		<TextBlock Text="Введите дату рождения: " Margin="0 5"/>
		<DatePicker SelectedDate="{Binding DateTimeOffset}"/>

		<TextBlock Text="Логин" Margin="0 5"/>
		<TextBox  Text="{Binding Login}" Watermark="Введите логин"  Margin="0 5"/>
		
		
		<TextBlock Text="Пароль" Margin="0 5"/>
		<TextBox  Text="{Binding Password}" Watermark="Введите пароль" PasswordChar="*" Margin="0 5"/>
		<TextBlock Text="Повторный пароль" Margin="0 5"/>
		<TextBox  Text="{Binding RepeatedPassword}" Watermark="Введите пароль повторно" PasswordChar="*" Margin="0 5"/>


		<Button  Content="Зарегестрироваться" Command="{Binding Registration}"/>
		<TextBlock Text="{Binding Info}"></TextBlock>
		
		
	</StackPanel>
</UserControl>