asp.net crystalreportviewer not showing report

Hello

I have created crystal report in my asp.net application. It's working fine in design view and also in Preview. But when i open the page in browser it is not displaying report in viewer. Only i can see is crystalreportviewer header.

Can anyone please help me in this matter?

Code is as per below.

        ReportDocument rptDocument = new ReportDocument();

        rptDocument.Load(Server.MapPath("~/test.rpt"));

        //rptDocument.FileName=Server.MapPath(@"~/rptExamPaper.rpt");

        crvExam.ReportSource = rptDocument;

Web.Config(I read in the posts i have to add below code in web.config. which i have tried already)

<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>

Appreciate your help. I have attached image for reference.