Isolated Storage aims to enable managed applications to create and maintain local storage. In Windows Phone 7 Silverlight-based applications, all I/O operations are restricted to isolated storage and do not have direct access to the underlying OS file system. Windows Phone application developers owe the ability to store data locally on the phone, leveraging all the benefits of isolated storage, such as providing security and preventing unauthorized access and data corruption from other applications.
As you may image, in Windows Phone 7 programming Isolated Storage manipulation is as important as memory handling in traditional desktop applications. So, in this article we are still going to focus upon the fundamentals associated with Isolated Storage via simple yet typical sample applications.