Added .NET 5.0 and restructured the repository. (#47)

src/NotifyIconWpf.Sample.Windowless/App.xaml.cs

@@ -0,0 +1,27 @@
+using System.Windows;
+using Hardcodet.Wpf.TaskbarNotification;
+
+namespace NotifyIconWpf.Sample.Windowless
+{
+    /// <summary>
+    /// Simple application. Check the XAML for comments.
+    /// </summary>
+    public partial class App : Application
+    {
+        private TaskbarIcon notifyIcon;
+
+        protected override void OnStartup(StartupEventArgs e)
+        {
+            base.OnStartup(e);
+
+            //create the notifyicon (it's a resource declared in NotifyIconResources.xaml
+            notifyIcon = (TaskbarIcon) FindResource("NotifyIcon");
+        }
+
+        protected override void OnExit(ExitEventArgs e)
+        {
+            notifyIcon.Dispose(); //the icon would clean up automatically, but this is cleaner
+            base.OnExit(e);
+        }
+    }
+}