topic Re: Access Drawing database without Opening it then Create Objects Inside then Save in .NET Forum

Access Drawing database without Opening it then Create Objects Inside then Save

john-malulan — Tue, 13 Jul 2021 11:10:14 GMT

Good day Everyone. I'm new to AutoCAD C# Programming asking for your kind assistance.

What I'm trying to do is

1. Access Drawing Database without Opening it in the Editor ( Template Drawing )

2. Create Objects Inside It

3. Assign Layer Property to the Created Objects

4. Save as New Drawing ( Output Drawing )

I followed this Solution and It works, I can already Access the drawing database and Create Objects Inside it and then save into a different drawing.

https://forums.autodesk.com/t5/net/how-to-open-an-autocad-file-update-and-close-with-save-using-c/td-p/8281653

But when I try to assign a layer property in the new object I get eKeyNotFound Error even though the Template drawing that I access has that layer.

I also followed this Link but still no Luck.

https://forums.autodesk.com/t5/net/how-change-layer-of-specific-entity/td-p/8577610

Here is my Source Code.

[CommandMethod("CHANGENEW")] public static void CreateText() { //Get the template plant database Database acCurDb = new Database(false, true); string dwgFlpath = @"D:\Users\johnrey.d.malulan\Downloads\Hotaka_New_Type_Test.dwg"; //Set the output Drawing Directory Document acDoc = Application.DocumentManager.MdiActiveDocument; string strDWGName = acDoc.Name; strDWGName = @"D:\Users\johnrey.d.malulan\Downloads\Output.dwg"; acCurDb.ReadDwgFile(dwgFlpath, FileOpenMode.OpenForReadAndAllShare, false, null); // Start a transaction using (Transaction acTrans = acCurDb.TransactionManager.StartTransaction()) { // Open the Block table for read BlockTable acBlkTbl; acBlkTbl = acTrans.GetObject(acCurDb.BlockTableId, OpenMode.ForRead) as BlockTable; // Open the Block table record Model space for write BlockTableRecord acBlkTblRec; acBlkTblRec = acTrans.GetObject(acBlkTbl[BlockTableRecord.ModelSpace], OpenMode.ForWrite) as BlockTableRecord; var layerName = "Character"; // check if the layer already exists var lt = (LayerTable)acTrans.GetObject(acCurDb.LayerTableId, OpenMode.ForRead); if (!lt.Has(layerName)) { // if not create it var layer = new LayerTableRecord() { Name = layerName, Color = Color.FromRgb(200, 30, 80) }; lt.UpgradeOpen(); lt.Add(layer); acTrans.AddNewlyCreatedDBObject(layer, true); Application.ShowAlertDialog("Layer Created"); } // Create a single-line text object DBText acText = new DBText(); //acText.SetDatabaseDefaults(); acText.Position = new Point3d(2, 2, 0); acText.Layer = layerName; acText.Height = 500; acText.TextString = "Hello, World."; acBlkTblRec.AppendEntity(acText); acTrans.AddNewlyCreatedDBObject(acText, true); // Save the changes and dispose of the transaction acTrans.Commit(); } acCurDb.SaveAs(strDWGName, DwgVersion.Current); }

Please help me 😞

Re: Access Drawing database without Opening it then Create Objects Inside then Save

_gile — Tue, 13 Jul 2021 12:12:07 GMT

Hi,

You should use the LayerId property instead.

public static void CreateFileWithText(string templatePath, string outputDwgPath) { // create a new Database (within a using statement to ensure the Database to be disposed) using (var db = new Database(false, true)) { // read the template dwg file db.ReadDwgFile(templatePath, FileOpenMode.OpenForReadAndAllShare, false, null); // start a transaction using (var tr = db.TransactionManager.StartTransaction()) { // check if a layer named "Character" already exists and create it if not string layerName = "Character"; ObjectId layerId; var layerTable = (LayerTable)tr.GetObject(db.LayerTableId, OpenMode.ForRead); if (layerTable.Has(layerName)) { layerId = layerTable[layerName]; } else { tr.GetObject(db.LayerTableId, OpenMode.ForWrite); var layer = new LayerTableRecord { Name = layerName, Color = Color.FromRgb(200, 30, 80) }; layerId = layerTable.Add(layer); tr.AddNewlyCreatedDBObject(layer, true); } // get the Model space var modelSpace = (BlockTableRecord)tr.GetObject( SymbolUtilityServices.GetBlockModelSpaceId(db), OpenMode.ForWrite); // create a text var text = new DBText { Position = new Point3d(2.0, 2.0, 0.0), LayerId = layerId, Height = 500.0, TextString = "Hello, World." }; modelSpace.AppendEntity(text); tr.AddNewlyCreatedDBObject(text, true); // save changes to the database tr.Commit(); } // save the new drawing db.SaveAs(outputDwgPath, DwgVersion.Current); } }

Re: Access Drawing database without Opening it then Create Objects Inside then Save

Alexander.Rivilis — Tue, 13 Jul 2021 12:32:46 GMT

Change:

acText.Layer = layerName;

with:

acText.LayerId = layerId; // ObjectId of your layer

P.S.: Oops! I did not see the @_gile answer.

Re: Access Drawing database without Opening it then Create Objects Inside then Save

john-malulan — Wed, 14 Jul 2021 11:46:36 GMT

You're a life saver Sir, Thank you so much. Have a nice day!