Microsoft.Maps.Directions API Reference
This section contains reference documentation for the Microsoft.Maps.Directions API, which contains types that allow you to calculate route directions and display them on your Bing Maps AJAX Control 7.0 map. Use the calculateDirections method of the DirectionsManager Class to calculate a route. Sample code can be found at http://www.bingmapsportal.com/isdk/ajaxv7.
Before you can access the types found in the Microsoft.Maps.Directions API, you must first load this module using the loadModule method. Information about loading modules is in the Module Loading Methods topic.