AutoCAD Sheet Set Manager (.NET)

Sheet Set Manager has no managed .NET API — it is COM-only.

Access it via dynamic COM using CLSIDs. Do NOT reference AcSmComponents.Interop.dll in .NET 8 plugins — it causes ReflectionTypeLoadException during NETLOAD. Use the dynamic pattern shown below.

Key CLSIDs

internal static class AcSmGuids
{
    // IAcSmSheetSetMgr — the root manager object
    public const string SheetSetMgr = "bcfa0ab8-cefc-43e9-841b-8141f44fe240";

    // IAcSmCustomPropertyValue — create new custom property values
    public const string CustomPropertyValue = "909a5a17-c368-40cb-8b92-d174395128df";
}