Debugging Property Access in Custom Revit to Rhino Grasshopper Component

Rhino.Inside Revit
,
1

I’m currently working on creating a custom Grasshopper (GH) component aimed at seamlessly importing floor elements from Revit into Rhino. To facilitate this process, I’ve developed a class library where I’ve defined wrapper classes such as AreaElement, FrameElement, and ColumnElement.

One of the core classes within this library is the AreaElement class, structured as follows:

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public class Area
{
    // Region properties
    public List<Point> Vertices { get; set; }
    public List<string> Groups { get; set; }
    public ElementId RevitElementId { get; set; }
    public string Section { get; set; }
    public string Type { get; set; }
    public List<Rhino.Geometry.Curve> CrvList { get; set; }
}

However, during the implementation of my Grasshopper component in C#, I encountered an issue. Despite defining the crvList property within the Area class, attempting to access it resulted in a runtime error indicating that no such property existed within the class.

Here’s a snippet of the method where the problem arises:

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public static void GetRevitAreas2(
    UIDocument uidoc, Document doc, ForgeTypeId dis, ref List<ClassesDefintions.Area> areas)
{
    // Collecting structural floors
    List<Floor> structuralFloors = new List<Floor>();

    FilteredElementCollector collector = new FilteredElementCollector(doc);
    ICollection<Element> elementsOfType = collector.OfClass(typeof(Floor)).ToElements();

    foreach (Element elem in elementsOfType)
    {
        Floor floor = elem as Floor;
        Area a = new ClassesDefintions.Area();

        var analyModel = floor.GetAnalyticalModel();

        if (analyModel != null)
        {
            structuralFloors.Add(floor);

            a.Section = floor.FloorType.ToString();
            a.RevitElementId = floor.Id;

            Sketch s = doc.GetElement(floor.SketchId) as Sketch;
            CurveArrArray crvArray = s.Profile;

            List<Rhino.Geometry.Curve> rhinoCrvs = RhinoInside.Revit.Convert.Geometry.GeometryDecoder
                .ToCurveMany(crvArray)
                .ToList();

            a.CrvList = rhinoCrvs;

            areas.Add(a);
        }
    }
}

I’m seeking guidance on resolving this runtime error.

2

Hi Ahmed,

Is your class working outside of the transaction (not shown)

We’ll need more info to be able to help.