External

Isolated storage is used to store local data on a Windows Phone. It is isolated because other applications can't access this data. In this tutorial you'll get an overview of isolated storage and learn how you can use it to store data more securely on Windows Phone 8.

In-app purchases are an excellent way to increase revenue for your Windows Phone app. In this tutorial, I'll be showing you how to implement in-app purchases in a Windows Phone 8 Silverlight application.