Possible issue with telerik reporting and tables?

[Rem]

I have a table in telerik reporting.  I then proceeded to add a row group.  This adds a "column" on the left of the table for the group.

If I set this "column" to have a width of 0 (e.g. 0cm), and then I try to create an output for the report to pdf using code below, I get a null reference exception on the last line shown below (I have not included other lines that follow). 

If I set the "column" for the row grouping to a width other than zero (e.g. 0.1 cm, 1cm, 2cm, etc) this null reference exception doesn't occur.

I found this as I was trying to "hide " that column (for now I just did a work around where I set the width to 0.1cm, set the text to white (against a white background and moved the table 0.1cm to the left to make it look consistent with other tables)

If CertReportBook.Reports.Count > 0 Then
    Dim instanceReportSource As New Telerik.Reporting.InstanceReportSource()
    instanceReportSource.ReportDocument = CertReportBook

    Dim reportProcessor As New ReportProcessor()

    Dim tcfiletype As String = "PDF"

    Dim result As RenderingResult = reportProcessor.RenderReport(tcfiletype, instanceReportSource, Nothing)

[Stef]

Hello Rem,

This is a known issue when the Table items structure is modified incorrectly e.g. there is an item in the structure with zero dimension or Visible property set to false.

The proper way to hide a column/row is to apply a filter on the corresponding column/row group. Thus there will not be rendered groups/items for the filtered out data, which is equivalent to hiding the column/row. For the purpose in the report designer you can use the Group Explorer.

I hope this information helps you.

Regards,
Stef
Telerik