/V4/Quickstarts/BasicMVVM/BasicMVVMApp/App.xaml

 1<Application xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
 2             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 
 3             x:Class="BasicMVVMApp.App"
 4             >
 5    <Application.Resources>
 6        <ResourceDictionary>
 7            <ResourceDictionary.MergedDictionaries>
 8                <ResourceDictionary Source="Theme/Theme.xaml"/>
 9            </ResourceDictionary.MergedDictionaries>
10        </ResourceDictionary>
11    </Application.Resources>
12</Application>