Searching using Elastic

 public ElasticClient Elastic { get; set; } // this is instantiated in the AppHost using IoC 
 
 public object Get(GetListings request)
 {
            int pageSize = 10;
            //request parameters
            int pageNr = request.PageNr ?? 1;
            string searchText = request.SearchText ?? "*";
            string city = request.City ?? "*";
            string categoryId = request.CategoryId?.ToString() ?? "*";
            string priceFrom = request.PriceFrom?.ToString() ?? "0";
            string priceTo = request.PriceTo?.ToString() ?? "9999999999999";
            long totalRecords = 0;

           
           // creating the search request
            QueryContainer query1 = new WildcardQuery
            {
                Field = "_all",
                Value = searchText
            };
            QueryContainer cityFilter = new WildcardQuery
            {
                Field = "city",
                Value = city,
                
            };
            QueryContainer categoryFilter = new WildcardQuery
            {
                Field = "category.id",
                Value = categoryId
            };

            QueryContainer priceRange = new RangeQuery
            {
                Field = "price",
                GreaterThanOrEqualTo =priceFrom,
               LowerThanOrEqualTo = priceTo,
            };

            var searchRequest = new SearchRequest
            {
                From = (pageNr * pageSize),
                Size = pageSize,
                Query = query1  && cityFilter && categoryFilter && priceRange
            };


            var results = Elastic.Search<Listing>(searchRequest);
            var resultListing = results.Documents;
            totalRecords = results.Total;
            
            return new GetListingsResponse { Result = resultListing, TotalRecords = totalRecords, CurrentPageNumber = pageNr, TotalPageCount = totalRecords/pageSize };
  }