Dear Leaders,Presently i am working on bulk Sms module in Asp.net.In this i am using a window Api "WinINet"Cls_StrRptDlrEndUsrBalDtl clsStrRptDlrEndUsrDtl = new Cls_StrRptDlrEndUsrBalDtl(); Cls_ExportTo clsExptToExl = new Cls_ExportTo(); Cls_MstDealer clsMstDealer = new Cls_MstDealer();