AvtoservisVika/AutoServiceVika/App.xaml

<Application x:Class="AutoServiceBulat.App"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:local="clr-namespace:AutoServiceBulat"
             StartupUri="MainWindow.xaml">

</Application>