Accessing curtain wall panels properties in c# for autodesk design automation

Question

I tried to access the curtain wall panels Host properties like below in C# but its inaccessible, is there a way to do it? I really appreciate your help on this.

// Curtain walls
var cwp = new FilteredElementCollector(doc)
        .OfCategory(BuiltInCategory.OST_CurtainWallPanels)
        .WhereElementIsNotElementType()
        .ToElements();
                
foreach (var p in cwp)
{
   var cwpCategoryName = p.Host.Category.Name; // Error, Element does not contain a definition for 'Host' and no accessible extension method ...
   var hostId = p.Host.Id;
   var cwpName = p.Host.Name;
   var assemblyCode = p.Host.WallType.LookupParameter("Assembly Code").AsValueString();
}

Thanks

Answer 1

Just on a side note, you can completely eliminate the call to ToElements. It has nil advantage in this case, and disadvantages using memory, coding (thinking) space and processing time. Unfortunately, I cannot say why the Host does not deliver what you want. I would suggest snooping the live BIM in Revit desktop using RevitLookup et al. and searching interactively for the required data.