Learn to programme in C# over the course of 24 episodes, Bob Tabor fromwww.LearnVisualStudio.net will teach you the fundamentals of C# programming.

Learn the skills and concepts applicable to video games, mobile environments, and client applications.

The following tutorials and videos walk you through getting the tools, writing code, debugging features, customizations and much more! Each concept is broken into its own video so you can search for and focus on the information you need.

Download the entire series’ source code

Watch all 24 Episodes

All Windows Phone devices have a built-in Assisted GPS (aGPS), which is used by various phone applications including maps, camera, and search (to provide location-based search results). Developers can access location information on Windows Phone by using the System.Device.Location namespace, which is supported in .NET 4 and later. The GeoCoordinateWatcher class supplies location data based on latitude and longitudecoordinates.

Working with the GeoCoordinateWatcher is relatively simple. Later in this piece, we’ll explain in more detail how to work with that class and how to test your application on a Windows Phone 7. However, sometimes your application requires more than just a single location, it requires tracking movement, and you may need to test how your application behaves in different locations.

read full article at the Windows Phone Developer Blog