docs-desktop/dotnet-desktop-guide/net/wpf/properties/snippets/how-to-implement-a-dependency-property/vb/Application.xaml

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