Corridor Solids trough API

[gleeuwdrent]

I am trying to implement the Export Corridor to Solids command in .NET so I can run the command over multiple corridors and to add parameter information as property sets. I have readed this forum post:

https://forums.autodesk.com/t5/civil-3d-customization/how-could-i-export-corridor-to-solids-by-civil...

And I am able to iterate trough the Applied Subassemblies. I understand the concept of creating regions from the CalculatedShapes and create a 3D solid from it, but how can I test if a CalculatedShape is current in the previous calculated station? In the forum post above they test if the shape codes is current, but that is not a tight test because shapes can have the same code. Has anyone an idea? Is there a (hidden) way to do this test?
Thanks in advance!

My current testing code:

                            using (Corridor corridor = corrId.GetObject(OpenMode.ForRead) as Corridor)
                            {
                                BaselineCollection corrBaselines = corridor.Baselines;
                                foreach (Baseline baseline in corrBaselines)
                                {
                                    ObjectId almId = baseline.AlignmentId;
                                    Alignment alm = almId.GetObject(OpenMode.ForRead) as Alignment;
                                    BaselineRegionCollection blRegions = baseline.BaselineRegions;
                                    foreach (BaselineRegion region in blRegions)
                                    {
                                        AppliedAssemblyCollection appAssCol = region.AppliedAssemblies;
                                        double[] appliedStations = appAssCol.Stations();
                                        List<double> stationList = appliedStations.ToList();
                                        stationList.Sort();
                                        foreach (double station in stationList)
                                        {
                                            AppliedAssembly appliedAss = appAssCol.GetItemAt(station);
                                            CiDb.Assembly ass = t.GetObject(appliedAss.AssemblyId, OpenMode.ForRead) as CiDb.Assembly;
                                            ed.WriteMessage("\n\nAssembly:" + ass.Name);
                                            ed.WriteMessage("\n\tStation:" + station.ToString());

                                            AppliedSubassemblyCollection appSubassCol = appliedAss.GetAppliedSubassemblies();
                                            foreach (AppliedSubassembly appSubass in appSubassCol)
                                            {
                                                Subassembly subAss = t.GetObject(appSubass.SubassemblyId, OpenMode.ForRead) as Subassembly;
                                                ed.WriteMessage("\n\t\tSubassembly:" + subAss.Name);
                                                ed.WriteMessage("\n\t\t\tHashCode:" + appSubass.GetHashCode());

                                                CalculatedShapeCollection calcShapeCol = appSubass.Shapes;
                                                if (calcShapeCol.Count > 0)
                                                {
                                                    ed.WriteMessage("\n\t\t\tNumber of shapes:" + calcShapeCol.Count);
                                                    for (int i = 0; i < calcShapeCol.Count; i++)
                                                    {
                                                        CalculatedShape link = calcShapeCol[i];
                                                        if (i > 0)
                                                        {
                                                            //How to test if the shape is current in previous (i-1) station?
                                                        }