How to add new layers to a side db?

[swaywood]

Hi,

I want to add a new layer A to a side db.

And there are some dbtexts in the side db.

I want to set the dbtext's layers  to A.

thanks.

    [CommandMethod("W7")]
    public void W7()
    {
      Database db = HostApplicationServices.WorkingDatabase;

      using (Transaction trans = db.TransactionManager.StartTransaction())
      {
        try
        {
          using (Database dbInsert = new Database(false, true))
          {
            string sDwg = @"D:\B.dwg";
            dbInsert.ReadDwgFile(sDwg, System.IO.FileShare.ReadWrite, true, null);

            Autodesk.AutoCAD.DatabaseServices.TransactionManager sideTm = dbInsert.TransactionManager;
            using (Transaction sideTr = sideTm.StartTransaction())
            {
              ObjectId id = dbInsert.NewLayer("A", 5, "continues", "acadiso.lin", LineWeight.LineWeight015, false, false, false, false, false);
              sideTr.Commit();
            }

            using (Transaction sideTr = sideTm.StartTransaction())
            {
              BlockTable bt = (BlockTable)sideTm.GetObject(dbInsert.BlockTableId, OpenMode.ForRead, false);
              BlockTableRecord modelspace = (BlockTableRecord)bt[BlockTableRecord.ModelSpace].GetObject(OpenMode.ForRead);

              foreach (ObjectId id in modelspace)
              {
                try
                {
                  if (id.IsErased) continue;

                  Entity ent = (Entity)sideTr.GetObject(id, OpenMode.ForWrite, false);
                  ent.Layer = "B";
                  ent.DowngradeOpen();
                }
                catch
                {

                }
              }

              sideTr.Commit();
            }

            dbInsert.RetainOriginalThumbnailBitmap = true;
            dbInsert.SaveAs(sDwg, DwgVersion.AC1027);

            trans.Commit();
          }
        }
        catch
        {
        }
      }
    }

    public static ObjectId NewLayer(this Database db, string layerName, short colorIndex, string lineType, string lineTypeFile, LineWeight lineWeight, bool bIsPlot, bool bIsOff, bool bIsFreezed, bool bIsLocked, bool bIsCurrent)
    {
      Editor ed = AcadApp.DocumentManager.MdiActiveDocument.Editor;
      colorIndex = (short)(colorIndex % 256);
      ObjectId idRet = ObjectId.Null;
      try
      {
        using (Transaction trans = (Transaction)db.TransactionManager.StartTransaction())
        {
          LayerTable lt = (LayerTable)trans.GetObject(db.LayerTableId, OpenMode.ForWrite);
          LayerTableRecord ltr = new LayerTableRecord();
          ltr.Name = layerName;

          ltr.IsOff = bIsOff;
          ltr.IsFrozen = bIsFreezed;
          ltr.IsLocked = bIsLocked;
          ltr.IsPlottable = bIsPlot;
          ltr.Color = CadColor.FromColorIndex(CadColors.ColorMethod.ByColor, colorIndex);
          ltr.LineWeight = lineWeight;
          ltr.LinetypeObjectId = db.LoadLineType(lineType, lineTypeFile);
          idRet = lt.Add(ltr);
          trans.AddNewlyCreatedDBObject(ltr, true);
          if (bIsCurrent)
            db.Clayer = idRet;
          trans.Commit();
        }
      }
      catch (System.Exception ex)
      {

      }
      return idRet;
    }

[_gile · Accepted solution]

Hi,

This works for me:

[CommandMethod("TEST2")]
public static void Test2()
{
    string fileName = @"D:\B.dwg";
    using (var db = new Database(false, true))
    {
        db.ReadDwgFile(fileName, FileOpenMode.OpenForReadAndAllShare, false, null);
        using (var tr = db.TransactionManager.StartTransaction())
        {
            db.AddLayer("A", 5, "Continuous", "acadiso.lin", LineWeight.LineWeight015, false);
            var modelSpace = (BlockTableRecord)tr.GetObject(
                SymbolUtilityServices.GetBlockModelSpaceId(db), OpenMode.ForRead);
            foreach (ObjectId id in modelSpace)
            {
                if (id.ObjectClass.Name == "AcDbText")
                {
                    var text = (DBText)tr.GetObject(id, OpenMode.ForWrite);
                    text.Layer = "A";
                }
            }
            tr.Commit();
        }
        db.SaveAs(fileName, DwgVersion.AC1027);
    }
}

The extension method (it checks if the layer already exists in the LayerTable of the database ans uses some default parameters).

public static ObjectId AddLayer(
    this Database db, 
    string layerName, 
    short colorIndex, 
    string lineType, 
    string lineTypeFile, 
    LineWeight lineWeight = LineWeight.ByLineWeightDefault, 
    bool isPlottable = true, 
    bool isOff = false, 
    bool isFrozen = false, 
    bool isLocked = false, 
    bool isCurrent = false)
{
    ObjectId layerId;
    LayerTableRecord layer;
    using (var tr = db.TransactionManager.StartTransaction())
    {
        var layerTable = (LayerTable)tr.GetObject(db.LayerTableId, OpenMode.ForRead);
        if (layerTable.Has(layerName))
        {
            layerId = layerTable[layerName];
            layer = (LayerTableRecord)tr.GetObject(layerId, OpenMode.ForWrite);
        }
        else
        {
            tr.GetObject(db.LayerTableId, OpenMode.ForWrite);
            layer = new LayerTableRecord();
            layer.Name = layerName;
            layerId = layerTable.Add(layer);
            tr.AddNewlyCreatedDBObject(layer, true);
        }
        var linetypeTable = (LinetypeTable)tr.GetObject(db.LinetypeTableId, OpenMode.ForRead);
        if (!linetypeTable.Has(lineType))
        {
            db.LoadLineTypeFile(lineType, lineTypeFile);
        }
        layer.Color = Color.FromColorIndex(ColorMethod.ByAci, colorIndex);
        layer.LinetypeObjectId = linetypeTable[lineType];
        layer.LineWeight = lineWeight;
        layer.IsPlottable = isPlottable;
        layer.IsOff = isOff;
        layer.IsFrozen = isFrozen;
        layer.IsLocked = isLocked;
        if (isCurrent)
            db.Clayer = layerId;
        tr.Commit();
    }
    return layerId;
}