PM-04/WpfApp1/WpfApp1/MainWindow.xaml

<Window x:Class="WpfApp1.MainWindow"
        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:WpfApp1"
        mc:Ignorable="d"
        xmlns:views="clr-namespace:WpfApp1.Views"
        Title="Обработка деталей"
        Height="700"
        Width="1100"
        WindowStartupLocation="CenterScreen">

    <Grid>
        <TabControl>
            <TabItem Header="Поиск изделий" Name="SearchProductsTab">
                <views:SearchProductsView/>
            </TabItem>

            <TabItem Header="Изделия" Name="ProductsTab">
            </TabItem>

            <TabItem Header="Справочники" Name="DictionariesTab">
                <views:DictionariesView/>
            </TabItem>
        </TabControl>
    </Grid>
</Window>