FirstAvalonia/AvaloniaExample/Views/Page1.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"
             xmlns:vm="using:AvaloniaExample.ViewModels"
			 x:DataType="vm:MainWindowViewModel"
             mc:Ignorable="d" d:DesignWidth="800" d:DesignHeight="450"
             x:Class="AvaloniaExample.Views.Page1">
	<StackPanel>
		<TextBox Watermark="login" Text="{Binding Page1VM.Login}"/>
		<TextBox Watermark="password" Text="{Binding Page1VM.Password}" PasswordChar="•"/>
		<Button Content="Войти" Command="{Binding LoadPage2}" IsDefault="True"/>
		<TextBlock Text="{Binding Page1VM.Message}"/>
	</StackPanel>
</UserControl>