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C3D-0099 · READ-ONLY: PDF layers and entity counts in the active drawing [PDF-COUNT] done

Lists every layer whose name starts with PDF in the currently active drawing, with how many entities each holds and whether it is frozen, plus totals. No changes.

C# payload

// READ-ONLY. How many PDF layers are in THIS drawing and how many entities do they hold?
// Nothing is modified.
var lt = (LayerTable)Tx.GetObject(Db.LayerTableId, OpenMode.ForRead);
var bt = (BlockTable)Tx.GetObject(Db.BlockTableId, OpenMode.ForRead);
Log("drawing: " + Db.Filename);

var counts = new Dictionary<string,int>();
int scanned = 0;
foreach (ObjectId btrId in bt) {
    var btr = (BlockTableRecord)Tx.GetObject(btrId, OpenMode.ForRead);
    foreach (ObjectId id in btr) {
        Autodesk.AutoCAD.DatabaseServices.DBObject o;
        try { o = Tx.GetObject(id, OpenMode.ForRead); } catch { continue; }
        var ent = o as Autodesk.AutoCAD.DatabaseServices.Entity;
        if (ent == null) continue;
        scanned++;
        string lay; try { lay = ent.Layer; } catch { continue; }
        if (!counts.ContainsKey(lay)) counts[lay] = 0;
        counts[lay]++;
    }
}

int nPdfLayers = 0, nPdfEnts = 0, nTotalLayers = 0;
foreach (ObjectId lid in lt) {
    var l = (LayerTableRecord)Tx.GetObject(lid, OpenMode.ForRead);
    nTotalLayers++;
    if (!l.Name.ToUpper().StartsWith("PDF")) continue;
    nPdfLayers++;
    int c = counts.ContainsKey(l.Name) ? counts[l.Name] : 0;
    nPdfEnts += c;
    Log(String.Format("  {0,-40} n={1}{2}", l.Name, c, l.IsFrozen ? "  FROZEN" : ""));
}
Log("");
Log("layers total=" + nTotalLayers + "   PDF layers=" + nPdfLayers + "   entities on them=" + nPdfEnts);
Log("entities scanned=" + scanned);

Result

drawing: C:\Users\sanja\OneDrive\_SurveyDisco\260613 - 5030 E Lake Pkwy, Stockbridge, GA 30281, USA\ACAD-260612 - CSTORE WATER ABS 30.dwg
  PDF2_C-DEMO                              n=4
  PDF2_E GRAVEL                            n=427
  PDF2_V-BNDY-ANNO                         n=1
  PDF2_E IPF-SET                           n=10
  PDF2_INTER_CONTOURS                      n=5365
  PDF2_SWM                                 n=14
  PDF2_P-ESMT                              n=3

layers total=63   PDF layers=7   entities on them=5824
entities scanned=7013