AvtoserviceDrive/AutoservisDrive/Pages/AddEditPage.xaml

<Page x:Class="AutoservisDrive.Pages.AddEditPage"
      xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
      xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
      xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
      xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
      xmlns:local="clr-namespace:AutoservisDrive.Pages"
      mc:Ignorable="d" 
      d:DesignHeight="450" d:DesignWidth="800"
      Title="AddEditPage">

    <Grid>
        <StackPanel Orientation="Horizontal" HorizontalAlignment="Center" VerticalAlignment="Center">
            <StackPanel HorizontalAlignment="Center" VerticalAlignment="Center">
                <StackPanel Orientation="Horizontal">
                    <StackPanel Orientation="Horizontal">
                        <TextBlock Style="{StaticResource BlockHeader}" FontSize="16" FontFamily="Arial" Text="Название"/>
                        <Separator Width="20" Background="{x:Null}" />
                        <TextBox Name="TBoxTitle" Width="190"/>
                    </StackPanel>
                </StackPanel>
                <Separator Height="10" Background="{x:Null}" />

                <StackPanel Orientation="Horizontal">
                    <TextBlock Style="{StaticResource BlockHeader}" FontSize="16" FontFamily="Arial" Text="Стоимость"/>
                    <Separator Width="20" Background="{x:Null}" />
                    <TextBox Name="TBoxCost" Width="182"/>
                </StackPanel>
                <Separator Height="10" Background="{x:Null}" />

                <StackPanel Orientation="Horizontal">
                    <TextBlock Style="{StaticResource BlockHeader}" FontSize="16" FontFamily="Arial" Text="Длит-сть (мин)"/>
                    <Separator Width="20" Background="{x:Null}" />
                    <TextBox Name="TBoxDuration" Width="150"/>
                </StackPanel>

                <Separator Height="10" Background="{x:Null}" />

                <StackPanel Orientation="Horizontal">
                    <TextBlock Style="{StaticResource BlockHeader}" FontSize="16" FontFamily="Arial" Text="Описание"/>
                    <Separator Width="20" Background="{x:Null}" />
                    <TextBox Name="TBoxDescription" TextWrapping="Wrap" Height="115" Width="187"/>
                </StackPanel>

                <Separator Height="10" Background="{x:Null}" />

                <StackPanel Orientation="Horizontal">
                    <TextBlock Style="{StaticResource BlockHeader}" FontSize="16" FontFamily="Arial" Text="Скидка"/>
                    <Separator Width="20" Background="{x:Null}" />
                    <TextBox Name="TBoxDiscount" Width="210"/>
                </StackPanel>
                <Separator Height="10" Background="{x:Null}" />
            </StackPanel>
            <StackPanel VerticalAlignment="Center">
                <StackPanel HorizontalAlignment="Center" VerticalAlignment="Center" Grid.Column="1">
                    <Border Margin="5" Height="175" Width="200" BorderBrush="#FFFF9D1A" BorderThickness="1">
                        <Image Name="ImageService"/>
                    </Border>
                    <Button Height="30" Width="200" Margin="5" Name="BtnSelectImage" Click="BtnSelectImage_Click" Content="Выбрать фотографию" FontSize="14" Style="{StaticResource BackButton}"/>
                    <Button Height="30" Width="200" Margin="5" Name="BtnSave" Click="BtnSave_Click" Content="Сохранить" FontSize="14" Style="{StaticResource BackButton}"/>
                </StackPanel>
            </StackPanel>
        </StackPanel>
    </Grid>
</Page>