CalculatorAvalonia/Views/LoginPage.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="clr-namespace:CalculatorSuperNew.ViewModels"
			 x:DataType="vm:MainWindowViewModel"
             mc:Ignorable="d" d:DesignWidth="800" d:DesignHeight="450"
             x:Class="CalculatorSuperNew.Views.LoginPage">
  
	<StackPanel Width="200" VerticalAlignment="Center">
		<TextBlock HorizontalAlignment="Center">Логин</TextBlock>
		<TextBox TextAlignment="Center" IsEnabled="{Binding LP.Enable}" Text = "{Binding LP.GetSetLogin}" Watermark="Хе-хе" Name="Login"></TextBox>
		<TextBlock HorizontalAlignment="Center">Пароль</TextBlock>
		<TextBox Watermark="Ха-ха" IsEnabled="{Binding LP.Enable}" Text="{Binding LP.GetSetPass}" TextAlignment="Center" PasswordChar="☕" Name="Pass"></TextBox>
		<StackPanel IsVisible="{Binding LP.Visibility}">
			<TextBlock HorizontalAlignment="Center">Введите капчу</TextBlock>
			<TextBox Watermark="Хи-хи" Text="{Binding LP.CapText}" TextAlignment="Center" PasswordChar="*" Name="Cap"></TextBox>
			<UserControl Content="{Binding LP.Capcha}"></UserControl>
		</StackPanel>
		<Button Margin="0,10,0,0" IsEnabled="{Binding LP.Enable}" Command="{Binding toCalculator}" HorizontalAlignment="Center">Войти</Button>
	</StackPanel>
    
	
</UserControl>