This example shows how the MailMerge feature enhanced with the DOCVARIABLE field specifics with the help of the RichEditDocumentServer text processing engine empowers the users to accomplish complex reporting tasks, such as creating Master-Detail reports.
The project uses a three-level Supplier-Product-OrderDetail hierarchical data source with the ITypedList interface, implemented as described in the E137: How to create a hierarchical master-detail datasource example. The XtraGrid GridControll is chosen to preview data because of its support for displaying hierarchical data sources in the most natural manner.
The application screenshot is shown below.