Building a SharePoint 2010 Service Application

In this developer article, I’ll show you how to create and provision a SharePoint Service Application. Within the service application I’ll define a WCF service endpoint which provides auto-completion services to ASP.NET AJAX-enabled controls. Finally I’ll leverage this WCF service and the ASP.NET AJAX Toolkit to provide users with a simple Geo-locator page. The Geo-locator will prompt a user for a city and state, suggesting known values in real-time as the form’s fields are completed. Once a city and state have been keyed, the user will be shown the specified location on a satellite map.