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C3D-0070 · READ-ONLY: do point or label styles reference V-NODE-TEXT [VNODE-STYLES] done

V-NODE-TEXT holds no entities in any block table record, so the remaining reference path is a Civil style naming the layer. Enumerates point styles and point label styles (using StyleBase, not the SymbolTableRecord cast that threw last run) and lists any CogoPoint on a V-NODE-* layer. No changes.

C# payload

// READ-ONLY. V-NODE-TEXT shows 0 entities anywhere, including block definitions, yet the user
// says it is used. Remaining place it can be referenced: a Civil STYLE naming the layer.
//
// Last attempt cast PointStyle to SymbolTableRecord and threw - PointStyle derives from
// StyleBase, not SymbolTableRecord. Use StyleBase and read each style's marker/label layer.
// Also check the CogoPoints themselves for a per-point label style override.
// Nothing is modified.
var civil = CivilApplication.ActiveDocument;

Func<Func<string>, string> safe = f => { try { return f(); } catch (System.Exception ex) { return "<" + ex.GetType().Name + ">"; } };

Log("=== POINT STYLES ===");
try {
    foreach (ObjectId sid in civil.Styles.PointStyles) {
        var o = Tx.GetObject(sid, OpenMode.ForRead);
        var sb = o as Autodesk.Civil.DatabaseServices.Styles.StyleBase;
        string nm = sb != null ? safe(() => sb.Name) : o.GetType().Name;
        var ent = o as Autodesk.AutoCAD.DatabaseServices.Entity;
        Log("  " + nm + "   entityLayer=" + (ent != null ? safe(() => ent.Layer) : "n/a"));
    }
} catch (System.Exception ex) { Log("  " + ex.Message); }

Log("");
Log("=== POINT LABEL STYLES ===");
try {
    foreach (ObjectId sid in civil.Styles.LabelStyles.PointLabelStyles.LabelStyles) {
        var o = Tx.GetObject(sid, OpenMode.ForRead);
        var sb = o as Autodesk.Civil.DatabaseServices.Styles.StyleBase;
        string nm = sb != null ? safe(() => sb.Name) : o.GetType().Name;
        var ent = o as Autodesk.AutoCAD.DatabaseServices.Entity;
        Log("  " + nm + "   entityLayer=" + (ent != null ? safe(() => ent.Layer) : "n/a"));
    }
} catch (System.Exception ex) { Log("  " + ex.Message); }

// Any CogoPoint whose own layer OR label is on the target layers
Log("");
Log("=== CogoPoints referencing V-NODE-* ===");
var ms = (BlockTableRecord)Tx.GetObject(SymbolUtilityServices.GetBlockModelSpaceId(Db), OpenMode.ForRead);
int hits = 0;
foreach (ObjectId id in ms) {
    var cp = Tx.GetObject(id, OpenMode.ForRead) as CogoPoint;
    if (cp == null) continue;
    string lay = safe(() => cp.Layer);
    if (lay.StartsWith("V-NODE")) {
        hits++;
        Log("  pt " + safe(() => cp.PointNumber.ToString()) + "  " + safe(() => cp.RawDescription) + "  layer=" + lay);
    }
}
Log("  CogoPoints on a V-NODE-* layer: " + hits);

Result

=== POINT STYLES ===
  Horizontal Curve Point   entityLayer=n/a
  Water Shutoff   entityLayer=n/a
  Benchmark   entityLayer=n/a
  Iron Pin [LARGE]   entityLayer=n/a
  Gas Valve   entityLayer=n/a
  Vertical Curve Point   entityLayer=n/a
  Guy Pole   entityLayer=n/a
  Bound   entityLayer=n/a
  Shrub - 5ft   entityLayer=n/a
  STA   entityLayer=n/a
  Catch Basin   entityLayer=n/a
  Storm Sewer Manhole   entityLayer=n/a
  Sign (single pole)   entityLayer=n/a
  Tree   entityLayer=n/a
  Utility Pole   entityLayer=n/a
  Well   entityLayer=n/a
  Sanitary Sewer Manhole   entityLayer=n/a
  Iron Pin   entityLayer=n/a
  Hydrant (proposed)   entityLayer=n/a
  TBC Yellow   entityLayer=n/a
  Basic   entityLayer=n/a
  Drill Hole   entityLayer=n/a
  Water Valve   entityLayer=n/a
  Standard   entityLayer=n/a
  Gas METER   entityLayer=n/a
  Test Pit   entityLayer=n/a
  Hydrant (existing)   entityLayer=n/a

=== POINT LABEL STYLES ===
  Description Only [IPF]   entityLayer=n/a
  Elevation Only   entityLayer=n/a
  Point#-Elevation-Description [HANDICAP]   entityLayer=n/a
  Elevation and Description   entityLayer=n/a
  Northing and Easting   entityLayer=n/a
  Point Number Only   entityLayer=n/a
  Point# and Description   entityLayer=n/a
  Standard   entityLayer=n/a
  Point#-Elevation-Description   entityLayer=n/a
  Description Only   entityLayer=n/a

=== CogoPoints referencing V-NODE-* ===
  CogoPoints on a V-NODE-* layer: 0