I\'m following several examples to do a toast notification when I click a button in my app. I stepped through the following example: http://msdn.microsoft.com/en-us/library/
Also, make sure that you have "toast capable" set in the manifest (Package.appxmanifest).
in Package.appxmanifest file, ApplicationUI/Toast capable should be Yes in order to Show our toast notifications.
I figured out the issue. I needed to set my app manifest to Toast Capable. I also noticed it doesn't work in simulator mode... But in Local Machine mode it worked.