Populates an array with references to all exterior rings. This method does not marshall correctly out-of-proc. Use QueryExteriorRingsEx on the IPolygon2 interface instead.
[Visual Basic 6.0] Sub QueryExteriorRings(
exteriorRings As IRing _
)
[Visual Basic .NET] Public Sub QueryExteriorRings ( _ ByRef exteriorRings As IRing _ )
[C#] public void QueryExteriorRings ( ref IRing exteriorRings );
[Java] public void queryExteriorRings ( IRing exteriorRings ) throws IOException, AutomationException
[C++] HRESULT QueryExteriorRings( IRing** exteriorRings );
Returns an array of IRings containing all of the Exterior Rings in the Polygon. Whenever possible, IPolygon2::QueryExteriorRingsEx should be used instead to ensure proper functionality and better control of the returned array.
Note : That method only accepts an array of type IRing for exteriorRings. Using an array of IRing2 won't work.

Does not work in .NET. Use IPolygon4.ExteriorRingBag instead.