Practik/Practic/Pages/AddEditServicePage.xaml

<Page x:Class="Practic.Pages.AddEditServicePage"
      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:Practic.Pages"
      mc:Ignorable="d" 
      d:DesignHeight="450" d:DesignWidth="800"
      Title="AddEditServicePage" Background="White">

    <Grid>
        <StackPanel Orientation="Horizontal" HorizontalAlignment="Center" VerticalAlignment="Center">
            <StackPanel HorizontalAlignment="Center" VerticalAlignment="Center">
                <StackPanel Orientation="Horizontal">
                    <TextBlock Text="Название  "></TextBlock>
                    <TextBox Width="147" x:Name="TBoxTitle"></TextBox>
                </StackPanel>
                <StackPanel Orientation="Horizontal">
                    <TextBlock Text="Стоимость "></TextBlock>
                    <TextBox Width="145" x:Name="TBoxCost"></TextBox>
                </StackPanel>
                <StackPanel Orientation="Horizontal">
                    <TextBlock Text="Длит-ть(мин) "></TextBlock>
                    <TextBox Width="131" x:Name="TBoxDuration"></TextBox>
                </StackPanel>
                <StackPanel Orientation="Horizontal">
                    <TextBlock Text="Описание "></TextBlock>
                    <TextBox Width="148" x:Name="TBoxDescription" TextWrapping="Wrap" Height="100"></TextBox>
                </StackPanel>
                <StackPanel Orientation="Horizontal">
                    <TextBlock Text="Скидка     "></TextBlock>
                    <TextBox Width="151" x:Name="TBoxDiscount"></TextBox> 
                </StackPanel>
            </StackPanel>
            <StackPanel VerticalAlignment="Center">
                <StackPanel HorizontalAlignment="Center" VerticalAlignment="Center" Grid.Column="1">
                    <Border Margin="5" Height="175" Width="200" BorderBrush="Black" BorderThickness="1">
                        <Image x:Name="ImageService"></Image>
                    </Border>
                    <Button Height="30" Width="200" Margin="5" x:Name="BtnSelectImage" Click="BtnSelectImage_Click" Background="Orange" Content="Выбрать фотографию"></Button>
                    <Button Height="30" Width="200" Margin="5" x:Name="BtnSave" Click="BtnSave_Click" Background="Wheat" Content="Сохранить"></Button>
                </StackPanel>
            </StackPanel>
        </StackPanel>
    </Grid>
</Page>