GeneratorLogin/Views/GeneratePage.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="LoginGenerator.GeneratePage"
             xmlns:vm="using:LoginGenerator.ViewModels"
			       x:DataType="vm:MainWindowViewModel"
             >

  <StackPanel  VerticalAlignment="Center">
    <TextBlock FontSize="24" FontWeight="Bold" HorizontalAlignment="Center">АССИСТЕНТ РЕГИСТРАЦИИ</TextBlock>
    <StackPanel>
      <TextBox Width="700" Watermark="Введите ФИО" Name="FIO"/>
      <StackPanel Margin="0 10 0 0" HorizontalAlignment="Center" Orientation="Horizontal">
        <Button Width="167" HorizontalContentAlignment="Center" FontWeight="Bold" BorderBrush="Black" Background="White" Foreground="#545454" Content="Ф" Click="OSurnameCopy_Click"/>
        <Button Width="167" HorizontalContentAlignment="Center" FontWeight="Bold" BorderBrush="Black" Background="White" Foreground="#545454" Margin="10 0 0 0" Content="И" Click="ONameCopy_Click"/>
        <Button Width="167" HorizontalContentAlignment="Center" FontWeight="Bold" BorderBrush="Black" Background="White" Foreground="#545454" Margin="10 0 0 0" Content="О" Click="OPatronymicCopy_Click"/>
        <Button Width="167" HorizontalContentAlignment="Center" FontWeight="Bold" BorderBrush="Black" Background="White" Foreground="#545454" Margin="10 0 0 0" Content="ИО" Click="ONamePatronymicCopy_Click"/>
      </StackPanel>

      <StackPanel Margin="0 10 0 0" HorizontalAlignment="Center" Orientation="Horizontal">
        <TextBox Width="529" Watermark="Логин" Name="Login"/>
        <Button Margin="10 0 0 0" Width="75" HorizontalContentAlignment="Center" FontWeight="Bold" BorderBrush="Black" Background="White" Foreground="#545454" Content="©" Click="LoginCopy"/>
        <Button Margin="10 0 0 0" Width="75" HorizontalContentAlignment="Center" FontWeight="Bold" BorderBrush="Black" Background="White" Foreground="#545454" Content="↻" Click="TMore_Click"/>
      </StackPanel>

      <StackPanel Margin="0 10 0 0" HorizontalAlignment="Center" Orientation="Horizontal">
        <TextBox Width="529" Watermark="Пароль" Name="Pass"/>
        <Button Margin="10 0 0 0" Width="75" HorizontalContentAlignment="Center" FontWeight="Bold" BorderBrush="Black" Background="White" Foreground="#545454" Content="©" Click="PassCopy"/>
        <Button Margin="10 0 0 0" Width="75" HorizontalContentAlignment="Center" FontWeight="Bold" BorderBrush="Black" Background="White" Foreground="#545454" Content="↻" Click="RegenPass"/>
      </StackPanel>
      
      <StackPanel Margin="0 10 0 0" Orientation="Horizontal" HorizontalAlignment="Center">
        <Button Width="226" HorizontalContentAlignment="Center" FontWeight="Bold" BorderBrush="Black" Background="White" Foreground="#545454" Content="Записать данные" Click="WriteIn"/>
        <Button Width="226" Margin="10 0 0 0" HorizontalContentAlignment="Center" FontWeight="Bold" BorderBrush="Black" Background="White" Foreground="#545454" Content="Скопировать данные" Click="CopyAll_Click"/>
        <Button Width="226" Margin="10 0 0 0" HorizontalContentAlignment="Center" FontWeight="Bold" BorderBrush="Black" Background="White" Foreground="#545454" Content="Сгенерировать данные"  Click="GenerateAll"/>
      </StackPanel>

      <StackPanel Margin="0 10 0 0" HorizontalAlignment="Center">
        <Button Width="700" HorizontalContentAlignment="Center" FontWeight="Bold" BorderBrush="Black" Background="White" Foreground="#545454" Content="Посмотреть данные пользователей" Command="{Binding ViewUsersData}"/>
      </StackPanel>
    </StackPanel>
   
    
  </StackPanel>
  
</UserControl>