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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");

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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");

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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);

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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");
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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;

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Author Closing Comment

ID: 40031579
This resolved the issue for me.

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