Drill Down Report using Crystal reports in eclipse and jspviewer

Question

Hi
I want to understand how to write a drill down report since I have a requirement for my project, so I tried to run the sample drill down.rpt that is available with Crystal Reports 2008 Complete Reference book by George Peck.
I can see the results correctly( i.e. can drill down) in the preview tab . Since I am working inside the eclipse, the way I run the reports is first  "Create report viewer JSP" by right clicking the report and have a url mapping to this jsp. I am running the reports from a hyperlink that maps to the url which will launch the jsp.
the jsp is:-
<%@ page contentType="text/html; charset=UTF-8" pageEncoding="ISO-8859-1" %><%@ taglib uri="/crystal-tags-reportviewer.tld" prefix="crviewer" %><crviewer:viewer reportSourceType="reportingComponent" viewerName="Drill Down-viewer" reportSourceVar="Drill Down" isOwnPage="true" allowDrillDown="true">
     <crviewer:report reportName="reports/Drill Down.rpt" />
</crviewer:viewer>
The one that was created by  "Create report viewer JSP" did not had "allowDrillDown" attribute at all .But I added it since it isnt working.
So when I launch my web app and click on the link to run the report, I get the report results but only to the summary level. When I double click the summary level I get a 404 error page.
Can please anyone suggest what is going on.
Thanks
poonam

Answer 1

Ok. So, you added the report to the project. Now we have to add the CR assemblies to the project, add the viewer (if need be) and fire it off. Simplest code would be:
Public Sub New()
        ' This call is required by the designer.
        InitializeComponent()
        ' Add any initialization after the InitializeComponent() call.
        CrystalReportViewer1.ReportSource = ("path to report")
    End Sub
In this case you are using the viewer SDK to runt he report. The report will prompt for any logon parameters - but you can code these also. You can load the report via the engine as bellow. Again, the report will prompt. I prefer to use the engine as it is way more "extensible"...
Public Sub New()
        ' This call is required by the designer.
        InitializeComponent()
        ' Add any initialization after the InitializeComponent() call.
        Dim crReportDocument As New CrystalDecisions.CrystalReports.Engine.ReportDocument()
        crReportDocument.Load("path to report")
        'Bind the report to the viewer
        CrystalReportViewer1.ReportSource = crReportDocument
    End Sub
If you have a report added to the project (strongly typed) the code would be:
CrystalReportViewer1.ReportSource = New myReport()
For more details, I'd recommend looking at the sample app vbnet_win_simplepreviewreport.zip available from the following location:
https://wiki.sdn.sap.com/wiki/display/BOBJ/CrystalReportsfor.NETSDK+Samples
The developer help files are here:
[SAP Crystal Reports .NET SDK Developer Guide|http://help.sap.com/businessobject/product_guides/sapCRVS2010/en/crnet_dg_2010_en.zip]
[SAP Crystal Reports .NET API Guide|http://help.sap.com/businessobject/product_guides/sapCRVS2010/en/crnet_api_2010_en.zip]
- Ludek