gistfile1.txt

 [WebMethod]
        public static String GetTopDocuments(string SearchText, string RelativeSearchPath, string ResourceTypes, string LinkedListUrl, string Program)
        {
            if (SPUtility.ValidateFormDigest())
            {
                string siteUrl = SPContext.Current.Site.Url;

                if (!string.IsNullOrEmpty(Program))
                {
                    Program = string.Format(@" Program:""{0}"" ", Program);
                }

                //for when pages can be searchable
                string queryConstant = @"(path:""{0}{1}"" contenttype:""Halton Document"" {2} {3}) OR (contenttype:""Page"" {2} {3}) ";
                string query = string.Format(queryConstant, siteUrl, RelativeSearchPath, ResourceTypes, Program);

                if (!string.IsNullOrEmpty(LinkedListUrl)) 
                {
                    query = "(" + query + @") OR (path:""" + LinkedListUrl + @"/DispForm.aspx*"" " + ResourceTypes + Program + " ) " + SearchText;
                }                                               

                List<TopDocument> topDocuments = HaltonContext.GetTopDocuments(siteUrl, HaltonContext.Search(siteUrl, query));

                var jsonSerialiser = new JavaScriptSerializer();
                return jsonSerialiser.Serialize(topDocuments);
            }
            return "error";
        }