Hmmm, have you tried using an Expression as the "bound sub/child property"?, look at the following for general syntax: http://msdn.microsoft.com/library/default.asp?url=/library/en- us/cpref/html/frlrfSystemDataDataColumnClassExpressionTopic.asp
(Relevant section cut'n'pasted here): PARENT/CHILD RELATION REFERENCING A column in a child table may be referenced in an expresion by prepending the column name with "Child." For example, "Child.Price" would reference the column named Price in the child table. If a table has more than one child, the syntax is: Child(RelationName). For example, if a table has two child tables named Employee and Titles, and the DataRelation objects are named "Publishers2Employee: and "Publishers2Titles," the reference would be: Child(Publishers2Employee).fname Child(Publishers2Titles).title A parent table may be referenced in an expression by prepending the column name with "Parent." For example, the "Parent.Price" references the parent table's column named "Price." Personally, I haven't tried it myself (too busy writing custom dataset/interface wrapper gen code), but I think it may be possible from some postings I saw on Google groups awhile back. You can read messages from the DOTNET archive, unsubscribe from DOTNET, or subscribe to other DevelopMentor lists at http://discuss.develop.com.
