Call SharePoint Web Services from the context of current logged-in user from an ASP.NET Web Site/Application that has Windows Authentication enabled
SharePoint Web Services provide methods that you can use to work remotely with a deployment of SharePoint.
Step-1 : Create a Asp.Net 3.5 Web Application and add a service reference in to your application
Step-2: Write logic to get SharePoint list data. If your list in any other SiteCollection, then use the below url..