Solved

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

Posted on 2014-04-25
6
4,641 Views
Last Modified: 2014-04-30
Crystal Reports 2008 SP4
ASP.NET 2.0
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())
{
    report.Load(Server.MapPath("FinancialAidInfo.rpt"));
    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

0
Comment
Question by:FIM2003
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 4
6 Comments
 
LVL 18

Expert Comment

by:vasto
ID: 40022791
Looks like the session variable is not set
0
 

Author Comment

by:FIM2003
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.
0
 
LVL 44

Expert Comment

by:AndyAinscow
ID: 40022828
What is Response ?  Should that be set to something ?
report.ExportToHttpResponse(ExportFormatType.PortableDocFormat, Response, false, "FinancialAidInfo");
0
Independent Software Vendors: We Want Your Opinion

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

 

Accepted Solution

by:
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

0
 

Author Closing Comment

by:FIM2003
ID: 40031579
This resolved the issue for me.
0

Featured Post

MS Dynamics Made Instantly Simpler

Make Your Microsoft Dynamics Investment Count  & Drastically Decrease Training Time by Providing Intuitive Step-By-Step WalkThru Tutorials.

Question has a verified solution.

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

Entity Framework is a powerful tool to help you interact with the DataBase but still doesn't help much when we have a Stored Procedure that returns more than one resultset. The solution takes some of out-of-the-box thinking; read on!
Exception Handling is in the core of any application that is able to dignify its name. In this article, I'll guide you through the process of writing a DRY (Don't Repeat Yourself) Exception Handling mechanism, using Aspect Oriented Programming.
In this video, viewers will be given step by step instructions on adjusting mouse, pointer and cursor visibility in Microsoft Windows 10. The video seeks to educate those who are struggling with the new Windows 10 Graphical User Interface. Change Cu…
There's a multitude of different network monitoring solutions out there, and you're probably wondering what makes NetCrunch so special. It's completely agentless, but does let you create an agent, if you desire. It offers powerful scalability …

630 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