NullReferenceException when using crystalReportViewer.ReportSource

[roopsd]

I am using VS.NET 2003 with crystal reports XI release 2. I get a
runtime error at the following line:

oRptForm.crystalReportViewer.ReportSource = oReport


An unhandled exception of type 'System.ExecutionEngineException'
occurred in mscorlib.dll

If I put the following statement inside a try catch block, it gives me
a
NullReferenceException. I have checked oReport to see that it has data.


Please help me with this.

Thanks for your help

 

[Ray Booysen]

I am using VS.NET 2003 with crystal reports XI release 2. I get a
runtime error at the following line:

oRptForm.crystalReportViewer.ReportSource = oReport


An unhandled exception of type 'System.ExecutionEngineException'
occurred in mscorlib.dll

If I put the following statement inside a try catch block, it gives me
a
NullReferenceException. I have checked oReport to see that it has data.


Please help me with this.

Thanks for your help

Can you post some of your code please?

 

[roopsd]

The following line is where it errors giving a null reference
exception:
oRptForm.crystalReportViewer.ReportSource = oReport

I have tried binding the oDataSet to a datagrid, it does show me 2
tables of values.

Private Sub btnShowReport_Click(ByVal sender As System.Object, ByVal e
As System.EventArgs) Handles btnShowReport.Click

Dim oDataSet As New ProductivityDataSet()
Dim oReport As New Productivity()
Dim oProductivityReport As New
GsaVoldrBiz.ProductivityReport()
Dim oRptForm As ImmWinForms.ReportViewer

Status.ShowStatus("Generating Productivity Report...")
Me.Cursor = Cursors.WaitCursor

oProductivityReport.GetProductivityReport(oDataSet,
dtpStartDate.Value, dtpEndDate.Value)


If oDataSet.Productivity.Rows.Count > 0 Then
Status.ShowStatus("Loading Productivity Report...")
oReport.SetDataSource(oDataSet)
oReport.SummaryInfo.ReportTitle = "Productivity Report"
oReport.SummaryInfo.ReportComments = "Start Date: " &
dtpStartDate.Text & " End Date: " & dtpEndDate.Text
'Create the Report Form
oRptForm =
ImmWinApplication.AddForm("ProductivityReport",
GetType(ImmWinForms.ReportViewer))

'Set the properties of the Report Form
oRptForm.Text = "Productivity Report"
oRptForm.crystalReportViewer.ShowCloseButton = False
oRptForm.crystalReportViewer.ShowGroupTreeButton =
False
oRptForm.crystalReportViewer.DisplayGroupTree = False
'oRptForm.crystalReportViewer.ReportSource = oReport
Try
DataGrid1.DataSource = oDataSet

oRptForm.crystalReportViewer.ReportSource = oReport
Catch ex As NullReferenceException

End Try


'Me.Cursor = Cursors.Default
'Status.HideStatus()
'Me.Close()
Else
Me.Cursor = Cursors.Default
Status.HideStatus()
MessageBox.Show("There are no records to report on,
please adjust your query and try again", "Search Results",
MessageBoxButtons.OK, MessageBoxIcon.Information)
End If

End Sub
End Class

End Namespace

 

[roopsd]

Hi!
Thank you for looking at it.

I get a NullReferenceException at the following line:
oRptForm.crystalReportViewer.ReportSource = oReport

I have tried binding the oDataset to datagrid to make sure it has data,
it does show 2 tables with data.

Please advice what I should do.

Thank you.


Private Sub btnShowReport_Click(ByVal sender As System.Object, ByVal e
As System.EventArgs) Handles btnShowReport.Click

Dim oDataSet As New ProductivityDataSet()
Dim oReport As New Productivity()
Dim oProductivityReport As New
GsaVoldrBiz.ProductivityReport()
Dim oRptForm As ImmWinForms.ReportViewer

Status.ShowStatus("Generating Productivity Report...")
Me.Cursor = Cursors.WaitCursor

oProductivityReport.GetProductivityReport(oDataSet,
dtpStartDate.Value, dtpEndDate.Value)


If oDataSet.Productivity.Rows.Count > 0 Then
Status.ShowStatus("Loading Productivity Report...")
oReport.SetDataSource(oDataSet)
oReport.SummaryInfo.ReportTitle = "Productivity Report"
oReport.SummaryInfo.ReportComments = "Start Date: " &
dtpStartDate.Text & " End Date: " & dtpEndDate.Text
'Create the Report Form
oRptForm =
ImmWinApplication.AddForm("ProductivityReport",
GetType(ImmWinForms.ReportViewer))

'Set the properties of the Report Form
oRptForm.Text = "Productivity Report"
oRptForm.crystalReportViewer.ShowCloseButton = False
oRptForm.crystalReportViewer.ShowGroupTreeButton =
False
oRptForm.crystalReportViewer.DisplayGroupTree = False
'oRptForm.crystalReportViewer.ReportSource = oReport
Try
DataGrid1.DataSource = oDataSet

oRptForm.crystalReportViewer.ReportSource = oReport
Catch ex As NullReferenceException

End Try


'Me.Cursor = Cursors.Default
'Status.HideStatus()
'Me.Close()
Else
Me.Cursor = Cursors.Default
Status.HideStatus()
MessageBox.Show("There are no records to report on,
please adjust your query and try again", "Search Results",
MessageBoxButtons.OK, MessageBoxIcon.Information)
End If

End Sub
End Class

End Namespace