Crystal Reports - Object reference not set to an instance of an object

Posted on 2014-04-25
Last Modified: 2014-04-30
Crystal Reports 2008 SP4
Visual Studio 2005

Getting an "Object reference not set to an instance of an object." error when trying to export my report to a pdf.

using (ReportDocument report = new ReportDocument())
    CrystalDecisions.CrystalReports.Engine.TextObject txtNotes = ((CrystalDecisions.CrystalReports.Engine.TextObject)report.ReportDefinition.ReportObjects["txtNotes"]);
    txtNotes.Text = notes;
    report.SetParameterValue("@Quarter", Session["Quarter"].ToString());
    report.SetParameterValue("@Year", Session["Year"].ToString());
    report.SetParameterValue("@Campusid", Session["Campusid"].ToString());
    report.ExportToHttpResponse(ExportFormatType.PortableDocFormat, Response, false, "FinancialAidInfo");

Open in new window

If I comment the three SetParameterValue lines out, the report will export, just with the data that was inputted into the "Main Report Preview" of the rpt file, but with those three lines passing the parameters, the error occurs at
report.ExportToHttpResponse(ExportFormatType.PortableDocFormat, Response, false, "FinancialAidInfo");

Open in new window

Question by:FIM2003
  • 4
LVL 18

Expert Comment

ID: 40022791
Looks like the session variable is not set

Author Comment

ID: 40022797
vasto: I was using this:

string strQtr = Session["Quarter"].ToString();
string strYr = Session["Year"].ToString();
string strCID = Session["Campusid"].ToString();
report.SetParameterValue("@Quarter", strQtr);
report.SetParameterValue("@Year", strYr);
report.SetParameterValue("@Campusid", strCID);

Open in new window

and went through checking the values with a breakpoint and all three variables have values.
LVL 44

Expert Comment

ID: 40022828
What is Response ?  Should that be set to something ?
report.ExportToHttpResponse(ExportFormatType.PortableDocFormat, Response, false, "FinancialAidInfo");
Optimizing Cloud Backup for Low Bandwidth

With cloud storage prices going down a growing number of SMBs start to use it for backup storage. Unfortunately, business data volume rarely fits the average Internet speed. This article provides an overview of main Internet speed challenges and reveals backup best practices.


Author Comment

ID: 40022851

Accepted Solution

FIM2003 earned 0 total points
ID: 40022883
I have resolved the problem. Had something to do with being able to access the report security wise. Adding this code before setting the parameter values fixed it:

foreach (CrystalDecisions.Shared.IConnectionInfo connection in report.DataSourceConnections)
    connection.IntegratedSecurity = true;

Open in new window


Author Closing Comment

ID: 40031579
This resolved the issue for me.

Featured Post

PRTG Network Monitor: Intuitive Network Monitoring

Network Monitoring is essential to ensure that computer systems and network devices are running. Use PRTG to monitor LANs, servers, websites, applications and devices, bandwidth, virtual environments, remote systems, IoT, and many more. PRTG is easy to set up & use.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

This article is for Object-Oriented Programming (OOP) beginners. An Interface contains declarations of events, indexers, methods and/or properties. Any class which implements the Interface should provide the concrete implementation for each Inter…
The article shows the basic steps of integrating an HTML theme template into an ASP.NET MVC project
Along with being a a promotional video for my three-day Annielytics Dashboard Seminor, this Micro Tutorial is an intro to Google Analytics API data.
Two types of users will appreciate AOMEI Backupper Pro: 1 - Those with PCIe drives (and haven't found cloning software that works on them). 2 - Those who want a fast clone of their boot drive (no re-boots needed) and it can clone your drive wh…

809 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question