AvalonaTeachersProject/AvaloniaTeachersDB/Views/AddTeacher.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"
			 x:DataType="vm:MainWindowViewModel"
			 xmlns:vm="using:AvaloniaTeachersDB.ViewModels"
             mc:Ignorable="d" d:DesignWidth="800" d:DesignHeight="600"
             x:Class="AvaloniaTeachersDB.Views.AddTeacher">
	<UserControl.Styles>
		<Style Selector="TextBox.fio" >
			<Setter Property="Width" Value="150"/>
			<Setter Property="Height" Value="30"/>
			<Setter Property="Margin" Value="0,15,20,15"/>
			<Setter Property="HorizontalAlignment" Value="Left"/>
		</Style>
		<Style Selector="Button.add" >
			<Setter Property="Width" Value="150"/>
			<Setter Property="Height" Value="30"/>
			<Setter Property="Margin" Value="20"/>
			<Setter Property="Padding" Value="10,0,10,0"/>
			<Setter Property="HorizontalContentAlignment" Value="Center"/>
			<Setter Property="VerticalContentAlignment" Value="Center"/>
		</Style>
	</UserControl.Styles>
	<Grid>
		<StackPanel Orientation="Vertical" HorizontalAlignment="Left" Margin="15">
			<StackPanel Orientation="Horizontal">
				<TextBox Watermark="Фамилия" Classes="fio" Text="{Binding AddTeacher.TSurname}"/>
				<TextBox Watermark="Имя" Classes="fio" Text="{Binding AddTeacher.TName}"/>
				<TextBox Watermark="Отчество" Classes="fio" Text="{Binding AddTeacher.TPatronymic}"/>
			</StackPanel>
			<DatePicker Margin="0,15,20,15" SelectedDate="{Binding AddTeacher.TBirthday}"/>
			<StackPanel Orientation="Horizontal">
				<RadioButton Content="Мужской" Margin="0,0,20,0" IsChecked="{Binding AddTeacher.TGenderM}"/>
				<RadioButton Content="Женский" Margin="0,15,20,15"/>
			</StackPanel>
			<StackPanel Orientation="Horizontal">
				<TextBlock Text="Стаж работы" VerticalAlignment="Center" Margin="0,0,20,0"/>
				<TextBox Text="{Binding AddTeacher.TExp}"/>
			</StackPanel>
			<TextBox Watermark="example@mail.com" Margin="0,10,10,0" Text="{Binding AddTeacher.TMail}"/>
			<TextBox Watermark="880005553535" Classes="fio" Text="{Binding AddTeacher.TPhone}"/>
			<StackPanel Orientation="Horizontal">
        <ComboBox Width="400" ItemsSource="{Binding AddTeacher.CollSub}" SelectedItem="{Binding AddTeacher.SelectSubject}" MaxDropDownHeight="250">
          <ComboBox.ItemTemplate>
            <DataTemplate>
              <TextBlock Text="{Binding NameSubjects}"/>
            </DataTemplate>
          </ComboBox.ItemTemplate>          
        </ComboBox>
        <ListBox ItemsSource="{Binding AddTeacher.CollSubSelect}" Width="300" Height="150" Margin="30,0,0,0">
          <ListBox.ItemTemplate>
            <DataTemplate>
              <TextBlock Text="{Binding NameSubjects}"/>
            </DataTemplate>
          </ListBox.ItemTemplate>
        </ListBox>
       </StackPanel>
			<StackPanel Orientation="Horizontal" HorizontalAlignment="Center">
				<Button Content="Добавить" Classes="add" Command="{Binding ToAddNewTeacher}"/>
				<Button Content="Назад" Classes="add" Command="{Binding ToPersInf}"/>
			</StackPanel>
		</StackPanel>
	</Grid>
</UserControl>