Check out this 4 minute screencast on how to create a master-detail report in XtraReports. This screencast uses the sample created in the last screencast. You can create unlimited master-detail levels in a single XtraReport. You don't need to use subreports with a separate master and detail datasource. Using a single datasource with native ADO.NET data relations, you can create a master-detail report. Just define a DataSet relation, then add a Detail Report band which includes this relation and you have a master-detail report without any writing any code.
Be sure to pay attention to the coloring of the detail report bands' captions. XtraReports will color these captions according to their level at design time. This will make it instantly clear to you which detail level you're working with. Check out this screencast and learn how easy it is to create a master-detail layout in XtraReports.
