public static string GetUSDOTDetails(string usdotno) { MCSaleHelper mcSaleHelper = new MCSaleHelper(); MCSaleEntity mcSale = mcSaleHelper.GetMCSaleUSDotNo(usdotno); if (mcSale == null) { DailyLeadsHelper leadHelper = new DailyLeadsHelper(); DailyLeadEntity LeadsData = leadHelper.GetLeadRecordsByDOTNo(usdotno); var json = new JavaScriptSerializer().Serialize(LeadsData); return(json); } var jsonSale = new JavaScriptSerializer().Serialize(mcSale); return(jsonSale); }