QueryService Class
SharePoint 2010
The QueryService class is the entry point for calling the SharePoint Enterprise Search Query web service.
Web service reference: http://Site/_vti_bin/Search.asmx
To access the Search Query web service and its methods, set a Web reference to:
http://Server_Name/[sites]/[Site_Name]/_vti_bin/search.asmx
You can find step-by-step instructions for this with Microsoft Visual Studio in the How to: Add a Web Reference to the Query Web Service topic.
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