avaloniaProjForMe/kuzminIVProjectWorkOnDemo/Views/ClientZapisWindow.axaml

<Window 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="kuzminIVProjectWorkOnDemo.ClientZapisWindow"
		xmlns:vm="using:kuzminIVProjectWorkOnDemo.ViewModels"
		x:DataType="vm:ClientZapisWindowViewModel"
		Icon="/Assets/school_logo.ico"
        Title="Запись клиентов">
	<Grid>
		<StackPanel>
			<TextBlock Text="Запись клиента на услугу" Classes="Header" />
			<StackPanel>
				<TextBlock Text="Услуга" />
				<ComboBox ItemsSource="{Binding ServiceList}" DisplayMemberBinding="{Binding Title}" HorizontalAlignment="Stretch" SelectedValue="{Binding takenService}" >
					
				</ComboBox>
				
			</StackPanel>
			<StackPanel>
				<TextBlock Text="Длительность в минутах" />
				<TextBox IsEnabled="True" Text="{Binding DurationServices}" />
			</StackPanel>
			<StackPanel>
				<TextBlock Text="Клиент" />
				<ComboBox ItemsSource="{Binding UsersList}" DisplayMemberBinding="{Binding FIO}" HorizontalAlignment="Stretch" SelectedValue="{Binding takenUser}" >

				</ComboBox>
			</StackPanel>
			<StackPanel>
				<TextBlock Text="Дата услуги" />
				<DatePicker SelectedDate="{Binding DateOfService}" >
				
				</DatePicker>
			</StackPanel>
			<StackPanel>
				<TextBlock Text="Время начала услуги" />
				<TextBox Text="{Binding TimeStart}" />
			</StackPanel>
			<StackPanel>
				<TextBlock Text="Время окончания услуги"  />
				<TextBox IsEnabled="True" Text="{Binding TimeEnd}" />
			</StackPanel>
			
			<TextBlock Margin="10" Text="{Binding MessageForUser}" />
			
			<Button Content="Записать клиента на улсугу" Classes="ButtonTemplate" Command="{Binding SaveData}" />
		</StackPanel>
	</Grid>
</Window>