This help topic shows the minimum amount of markup and code needed to use PanAndZoomImage.
Using PanAndZoomImage consists of declaring an instance of the control in XAML or C# and setting its Source property. The source
property is of type ImageSource and works the same way as the Source property of the Image class. Once Source is set zooming and panning
on the image is possible through the pinch and pan gestures or through C#/XAML via the Pan and Zoom properties.