AvaloniaProjectApp/AvaloniaApplication2/Views/Autorization.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="AvaloniaApplication2.Autorization"
			xmlns:vm="using:AvaloniaApplication2.ViewModels"
		x:DataType="vm:MainWindowViewModel">

	<StackPanel HorizontalAlignment="Center" VerticalAlignment="Center">
		<TextBlock Text="Логин"/>
		<TextBox Text="{Binding Login}" />

		<TextBlock Text="Пароль" />
		<TextBox Text="{Binding Password}" PasswordChar="*"/>

		<Button Content="Войти" Width="200" Command="{Binding Enter}"/>

		<TextBlock Text="{Binding Info}" Foreground="Red" Margin="0,20,0,0" />
	</StackPanel>
</UserControl>