Sending toast notifications from desktop apps sample

using System;
using System.Diagnostics;
using System.IO;
using System.Windows;
using System.Windows.Controls;
using DesktopToastsSample.ShellHelpers;
using MS.WindowsAPICodePack.Internal;
using Microsoft.WindowsAPICodePack.Shell.PropertySystem;

using Windows.UI.Notifications;
using Windows.Data.Xml.Dom;

namespace DesktopToastsSample
{
    public partial class MainWindow : Window
    {
        private const String APP_ID = "Microsoft.Samples.DesktopToastsSample";
        public MainWindow()
        {
            InitializeComponent();
            TryCreateShortcut();
            ShowToastButton.Click += ShowToastButton_Click;
        }

        // In order to display toasts, a desktop application must have a shortcut on the Start menu.
        // Also, an AppUserModelID must be set on that shortcut.
        // The shortcut should be created as part of the installer. The following code shows how to create
        // a shortcut and assign an AppUserModelID using Windows APIs. You must download and include the 
        // Windows API Code Pack for Microsoft .NET Framework for this code to function
        //
        // Included in this project is a wxs file that be used with the WiX toolkit
        // to make an installer that creates the necessary shortcut. One or the other should be used.
        private bool TryCreateShortcut()
        {
            String shortcutPath = Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData) + "\\Microsoft\\Windows\\Start Menu\\Programs\\Desktop Toasts Sample CS.lnk";
            if (!File.Exists(shortcutPath))
            {
                InstallShortcut(shortcutPath);
                return true;
            }
            return false;
        }

        private void InstallShortcut(String shortcutPath)
        {
            // Find the path to the current executable
            String exePath = Process.GetCurrentProcess().MainModule.FileName;
            IShellLinkW newShortcut = (IShellLinkW)new CShellLink();

            // Create a shortcut to the exe
            ShellHelpers.ErrorHelper.VerifySucceeded(newShortcut.SetPath(exePath));
            ShellHelpers.ErrorHelper.VerifySucceeded(newShortcut.SetArguments(""));

            // Open the shortcut property store, set the AppUserModelId property
            IPropertyStore newShortcutProperties = (IPropertyStore)newShortcut;

            using (PropVariant appId = new PropVariant(APP_ID))
            {
                ShellHelpers.ErrorHelper.VerifySucceeded(newShortcutProperties.SetValue(SystemProperties.System.AppUserModel.ID, appId));
                ShellHelpers.ErrorHelper.VerifySucceeded(newShortcutProperties.Commit());
            }

            // Commit the shortcut to disk
            IPersistFile newShortcutSave = (IPersistFile)newShortcut;

            ShellHelpers.ErrorHelper.VerifySucceeded(newShortcutSave.Save(shortcutPath, true));
        }

        // Create and show the toast.
        // See the "Toasts" sample for more detail on what can be done with toasts
        private void ShowToastButton_Click(object sender, RoutedEventArgs e)
        {

            // Get a toast XML template
            XmlDocument toastXml = ToastNotificationManager.GetTemplateContent(ToastTemplateType.ToastImageAndText04);

            // Fill in the text elements
            XmlNodeList stringElements = toastXml.GetElementsByTagName("text");
            for (int i = 0; i < stringElements.Length; i++)
            {
                stringElements[i].AppendChild(toastXml.CreateTextNode("Line " + i));
            }

            // Specify the absolute path to an image
            String imagePath = "file:///" + Path.GetFullPath("toastImageAndText.png");
            XmlNodeList imageElements = toastXml.GetElementsByTagName("image");
            imageElements[0].Attributes.GetNamedItem("src").NodeValue = imagePath;

            // Create the toast and attach event listeners
            ToastNotification toast = new ToastNotification(toastXml);
            toast.Activated += ToastActivated;
            toast.Dismissed += ToastDismissed;
            toast.Failed += ToastFailed;

            // Show the toast. Be sure to specify the AppUserModelId on your application's shortcut!
            ToastNotificationManager.CreateToastNotifier(APP_ID).Show(toast);
        }

        private void ToastActivated(ToastNotification sender, object e)
        {
            Dispatcher.Invoke(() =>
            {
                Activate();
                Output.Text = "The user activated the toast.";
            });
        }

        private void ToastDismissed(ToastNotification sender, ToastDismissedEventArgs e)
        {
            String outputText = "";
            switch (e.Reason)
            {
                case ToastDismissalReason.ApplicationHidden:
                    outputText = "The app hid the toast using ToastNotifier.Hide";
                    break;
                case ToastDismissalReason.UserCanceled:
                    outputText = "The user dismissed the toast";
                    break;
                case ToastDismissalReason.TimedOut:
                    outputText = "The toast has timed out";
                    break;
            }

            Dispatcher.Invoke(() =>
            {
                Output.Text = outputText;
            });
        }

        private void ToastFailed(ToastNotification sender, ToastFailedEventArgs e)
        {
            Dispatcher.Invoke(() =>
            {
                Output.Text = "The toast encountered an error.";
            });
        }
    }
}