Crystal Report Viewer - ASP.net -

i attempting add crystal report viewer asp.net web app. using reports created our desktop application created , functional. connecting same database same query across both platforms , database , query set in report designer.

here's preview 1 of reports in visual studio pro 2015 in asp.net project:

i have added following line reports.aspx page:

<cr:crystalreportviewer id="crptviewer" runat="server" autodatabind="true" /> 

i added "crystalreportviewers13" folder root of application directory content of crystal report installation.

i have added following web.config file:

<configuration>   <configsections>     <sectiongroup name="businessobjects">       <sectiongroup name="crystalreports">         <section name="rptbuildprovider" type="crystaldecisions.shared.rptbuildproviderhandler, crystaldecisions.shared, version=13.0.2000.0, culture=neutral, publickeytoken=692fbea5521e1304, custom=null"/>         <section name="crystalreportviewer" type="system.configuration.namevaluesectionhandler"/>       </sectiongroup>     </sectiongroup>   </configsections>    <businessobjects>     <crystalreports>       <rptbuildprovider>         <add embedrptinresource="true"/>      </rptbuildprovider>     <crystalreportviewer>               <add key="resourceuri" value="/crystalreportviewers13" />       </crystalreportviewer>     </crystalreports>   </businessobjects> 

i have tried several strategies on code behind based on different stack overflow suggestions. here's i've tried far:

on button click:

public partial class reports : system.web.ui.page  {  reportdocument rptdocument; protected void page_load(object sender, eventargs e)     {         string stack = "page_load()(reports.aspx.cs)";         try         {             if (session["report"] != null)             {                 crptviewer.reportsource = session["report"];              }         }         catch (exception ex)         {             ioclass.appendlog("error in " + stack, ex.message);         }     }     //button click    protected void generatereport(object sender, eventargs e)     {          rptdocument = new reportdocument();         rptdocument.load(server.mappath("~/crystal/userlisting.rpt"));          rptdocument.setparametervalue("company", 1);          session["report"] = rptdocument;       } } 

and on load:

public partial class reports : system.web.ui.page {      reportdocument rptdocument;     protected void page_load(object sender, eventargs e)     {         string stack = "page_load()(reports.aspx.cs)";         try         {            rptdocument = new reportdocument();            rptdocument.load(server.mappath("~\\crystal\\userlisting.rpt"));            crptviewer.reportsource = rptdocument;             //i have tried , without following:            //crptviewer.databind();            //and            //crptviewer.refreshreport();         }         catch (exception ex)         {             ioclass.appendlog("error in " + stack, ex.message);         }     } } 

when page loads in both cases get:

i'm doing exception logging on load function , not exceptions.

any ideas i'm doing wrong here? let me know if can provide other information.

thank time