Sorting Crystal Reports programmatically

[Peter Afonin]

Hello,

I'm still learning Crystal reports, and now I need to sort report
programmaticall y. I've found a good article about it:
http://blogs.ittoolbox.com/c/coding/...atically-16201.
This is how it described there:

ReportDocument objReport = new ReportDocument( );
objReport.Load( "Your report path");
FieldDefinition FieldDef;
FieldDef = objReport .Database.Table s[0].Fields[sortField];
objReport.DataD efinition.SortF ields[0].Field = FieldDef;
objReport.DataD efinition.SortF ields[0].SortDirection =
CrystalDecision s.Shared.SortDi rection.Descend ingOrder;

When I try to do this, I'm getting an error on this line:

objReport.DataD efinition.SortF ields[0].Field = FieldDef;

Exception from HRESULT: 0x8002000B (DISP_E_BADINDE X))

This error is also described in this article:

"This is because you didn't define any sort field in your crytal report...
so if you try to add a FieldDef to the SortFields at a specified index and
that index doesn't exist then you will get the error..."

But there is no explanation how to define the sort fields in the report.
I've searched the Google and found several posts about the same issue, but
also no explanation.

So how can I define the sort fields for the report so I could sort
programmaticall y?

I would appreciate your help.

Thank you,

Peter