App.xaml

<Application x:Class="WPF.App"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:local="clr-namespace:WPF"
             Startup="Application_Startup">
    <Application.Resources>
        <ResourceDictionary Source="Common/WPF/Dictionary.xaml"/>
    </Application.Resources>
</Application>