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C3D-INSP619D · Count lines on layer PARCEL (read-only) done

Entity count by type on layer PARCEL.

C# payload

// READ-ONLY: count entities on layer "PARCEL" by type (model space).
using System;
using System.Collections.Generic;
using Autodesk.AutoCAD.DatabaseServices;

var db = Db;
using (var tr = db.TransactionManager.StartTransaction())
{
    var ms = (BlockTableRecord)tr.GetObject(SymbolUtilityServices.GetBlockModelSpaceId(db), OpenMode.ForRead);
    int lines=0, total=0;
    var byType = new SortedDictionary<string,int>(StringComparer.OrdinalIgnoreCase);
    foreach (ObjectId id in ms)
    {
        var e = tr.GetObject(id, OpenMode.ForRead) as Autodesk.AutoCAD.DatabaseServices.Entity;
        if (e == null || !string.Equals(e.Layer, "PARCEL", StringComparison.OrdinalIgnoreCase)) continue;
        total++;
        var tn = e.GetType().Name;
        byType[tn] = byType.TryGetValue(tn, out var c) ? c+1 : 1;
        if (e is Line) lines++;
    }
    Log($"Layer PARCEL: total entities={total}, Line count={lines}");
    foreach (var kv in byType) Log($"  {kv.Key}: {kv.Value}");
    tr.Commit();
}

Result

Layer PARCEL: total entities=19, Line count=19
  Line: 19