parentkey and childkey are identical

[3epideh]

Hello,
I try to fill two table from dataset at runtime,but I get this error:parentkey and childkey are identical
I do the same as this link:
http://www.stimulsoft.com/videos/step-b ... onent.html

,just use dataset instead of xml datasource.

[HighAley]

Hello.

You can't create relation in one DataSet.
For more appropriate answer we needd to see your code and a report template with data.

Thank you.