Introduced a NotificationFlyoutPresenter to allow you to restyle/retemplate the flyout from within your UWP app

NotificationFlyout.Tray/App.xaml

@@ -1,4 +1,4 @@
-<Application x:Class="NotificationFlyout.Tray.App"
-             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
-             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
-</Application>
+<Application
+    x:Class="NotificationFlyout.Sample.Wpf.App"
+    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" />

NotificationFlyout.Tray/App.xaml.cs

@@ -1,6 +1,6 @@
 using System.Windows;
 
-namespace NotificationFlyout.Tray
+namespace NotificationFlyout.Sample.Wpf
 {
     public partial class App : Application
     {

NotificationFlyout.Tray/NotificationFlyout.Sample.Wpf.csproj

@@ -6,8 +6,9 @@
     <UseWPF>true</UseWPF>
     <AssetTargetFallback>uap10.0.19041</AssetTargetFallback>
     <Platforms>AnyCPU;x64</Platforms>
-    <StartupObject>NotificationFlyout.Tray.Program</StartupObject>
+    <StartupObject>NotificationFlyout.Sample.Wpf.Program</StartupObject>
     <LangVersion>9.0</LangVersion>
+    <AssemblyName>NotificationFlyout.Sample.Wpf</AssemblyName>
   </PropertyGroup>
 
   <ItemGroup>

NotificationFlyout.Tray/Program.cs

@@ -1,7 +1,6 @@
-using NotificationFlyout.Tray.Views;
-using System;
+using System;
 
-namespace NotificationFlyout.Tray
+namespace NotificationFlyout.Sample.Wpf
 {
     public class Program
     {
@@ -9,9 +8,9 @@ namespace NotificationFlyout.Tray
         public static void Main()
         {
             using (new XamlHost.App())
-            {
+            {          
                 var app = new App();
-                new Shell();
+                new SampleNotificationFlyout();
                 app.Run();
             }
         }

NotificationFlyout.Tray/Properties/AssemblyInfo.cs

@@ -1,10 +1,2 @@
 using System.Windows;
-
-[assembly: ThemeInfo(
-    ResourceDictionaryLocation.None, //where theme specific resource dictionaries are located
-                                     //(used if a resource is not found in the page,
-                                     // or application resource dictionaries)
-    ResourceDictionaryLocation.SourceAssembly //where the generic resource dictionary is located
-                                              //(used if a resource is not found in the page,
-                                              // app, or any theme specific resource dictionaries)
-)]
+[assembly: ThemeInfo(ResourceDictionaryLocation.None, ResourceDictionaryLocation.SourceAssembly)]

NotificationFlyout.Tray/SampleNotificationFlyout.xaml

@@ -1,10 +1,8 @@
 <NotificationFlyout
-    x:Class="NotificationFlyout.Tray.Views.Shell"
+    x:Class="NotificationFlyout.Sample.Wpf.SampleNotificationFlyout"
     xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
-    xmlns:sample="clr-namespace:NotificationFlyout.Sample;assembly=NotificationFlyout.Sample">
-    <NotificationFlyout.Icon>
-        <NotificationFlyoutIcon IconSource="/Assets/Icon.ico" />
-    </NotificationFlyout.Icon>
-    <sample:MyUserControl1 />
+    xmlns:sample="clr-namespace:NotificationFlyout.Sample;assembly=NotificationFlyout.Sample"
+    IconSource="/Assets/Icon.ico">
+    <sample:NotificationFlyoutPresenter />
 </NotificationFlyout>

NotificationFlyout.Tray/SampleNotificationFlyout.xaml.cs

@@ -0,0 +1,10 @@
+namespace NotificationFlyout.Sample.Wpf
+{
+    public partial class SampleNotificationFlyout
+    {
+        public SampleNotificationFlyout()
+        {
+            InitializeComponent();
+        }
+    }
+}

NotificationFlyout.Tray/Views/Shell.xaml.cs

@@ -1,10 +0,0 @@
-namespace NotificationFlyout.Tray.Views
-{
-    public partial class Shell 
-    {
-        public Shell()
-        {
-            InitializeComponent();
-        }
-    }
-}