exTest/Test/WindowDob.xaml

<Window x:Class="Test.WindowDob"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        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"
        xmlns:local="clr-namespace:Test"
        mc:Ignorable="d"
        Title="WindowDob" Height="450" Width="800">
    <Grid>
        <Border>
                <StackPanel Orientation="Vertical">
                    <TextBox x:Name="Title" ></TextBox>
                    <ComboBox x:Name="CB2"></ComboBox>
                    <TextBox x:Name="CountInStock"></TextBox>
                    <TextBox x:Name="Unit"></TextBox>
                    <TextBox x:Name="CountInPack"></TextBox>
                    <TextBox x:Name="MinCount" ></TextBox>
                    <TextBox x:Name="Cost"></TextBox>
                    <Image Width="50" Height="50" x:Name="img"></Image>
                    <Button Content="Добавить новое изображение" Click="Button_Click"></Button>
                <TextBox x:Name="Description" TextWrapping="Wrap" AcceptsReturn="True" VerticalScrollBarVisibility="Visible"></TextBox> <!--TextWrapping="Wrap" AcceptsReturn="True" VerticalScrollBarVisibility="Visible" - для многостраничного ввода-->
                <Button Content="Сохранить" Click="Button_Click_1"></Button>
                </StackPanel>

            </Border>
        </Grid>
</Window>