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WinForms ReportViewer using VS2005: can't use nested objects as data source

I am using the WinForms ReportViewer in VS2005 to create some reports from some data objects that I supply to it. What I have noticed is that the data sources for the report will show the whole structure of the object including any sub-objects, but the sub-objects do not work.

Is this a known limitation of ReportViewer or am I doing something wrong?

eg. I add object MyObject1 as a data source to a report. MyObject1 contains an instance of MyObject2, yet when you use the nested MyObject2 fields in the report they don't work.

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