I'm trying to create multiple layers in C#. Each layer should have a unique description, but currently, the description is always the same as the layer name. Could you help me figure out ?

Aravinth.Pichamani — Mon, 23 Jun 2025 05:46:36 GMT

[CommandMethod("Multilayer")] public void CreateCustomLayersFixed() { Document doc = Application.DocumentManager.MdiActiveDocument; Editor editor = doc.Editor; Database database = doc.Database; ObjectId layerId = database.LayerTableId; // Sample list: (Layer Name, Description, Color Index) List<(string name, string description, short colorIndex)> layersList = new List<(string name, string description, short colorIndex)> { ("C-NTWK-ELE3-CABL-AERL-E", "Existing Aerial Cable", 55), ("C-NTWK-ELE3-CABL-AERL-P", "Proposed Aerial Cable", 4), ("C-NTWK-ELE3-CABL-AERL-T", "Temporary Aerial Cable", 160), }; using (Transaction tr = database.TransactionManager.StartTransaction()) { // Register "LayerDescriptions" for XData RegAppTable regAppTable = tr.GetObject(database.RegAppTableId, OpenMode.ForRead) as RegAppTable; if (!regAppTable.Has("LayerDescriptions")) { regAppTable.UpgradeOpen(); RegAppTableRecord regAppRecord = new RegAppTableRecord { Name = "LayerDescriptions" }; regAppTable.Add(regAppRecord); tr.AddNewlyCreatedDBObject(regAppRecord, true); } LayerTable layerTable = tr.GetObject(layerId, OpenMode.ForRead) as LayerTable; foreach (var lay in layersList) { string name = lay.name; string description = lay.description; short colorIndex = lay.colorIndex; editor.WriteMessage($"\nProcessing: Name='{name}', Description='{description}'"); // DEBUG if (!layerTable.Has(name)) { layerTable.UpgradeOpen(); LayerTableRecord newLayer = new LayerTableRecord { Name = name, Color = Color.FromColorIndex(ColorMethod.ByAci, colorIndex), Description = description }; // Attach XData description ResultBuffer xdata = new ResultBuffer( new TypedValue((int)DxfCode.ExtendedDataRegAppName, "LayerDescriptions"), new TypedValue((int)DxfCode.ExtendedDataAsciiString, description) ); newLayer.XData = xdata; layerTable.Add(newLayer); tr.AddNewlyCreatedDBObject(newLayer, true); editor.WriteMessage($"\n Created layer: {name} (Color: {colorIndex}, Desc: {description})"); } else { LayerTableRecord existingLayer = (LayerTableRecord)tr.GetObject(layerTable[name], OpenMode.ForWrite); existingLayer.Description = description; editor.WriteMessage($"\nUpdated existing layer: {name} (Desc: {description})"); } } tr.Commit(); } }

Re: I'm trying to create multiple layers in C#. Each layer should have a unique description, but currently, the description is always the same as the layer name. Could you help me figure out ?

Aravinth.Pichamani — Mon, 23 Jun 2025 05:47:20 GMT

Re: I'm trying to create multiple layers in C#. Each layer should have a unique description, but currently, the description is always the same as the layer name. Could you help me figure out ?

_gile — Mon, 23 Jun 2025 06:18:07 GMT

Hi,

Try setting the description after having added the new layer to the Database.

if (!layerTable.Has(name)) { layerTable.UpgradeOpen(); LayerTableRecord newLayer = new LayerTableRecord { Name = name, Color = Color.FromColorIndex(ColorMethod.ByAci, colorIndex) }; layerTable.Add(newLayer); tr.AddNewlyCreatedDBObject(newLayer, true); newLayer.Description = description; editor.WriteMessage($"\n Created layer: {name} (Color: {colorIndex}, Desc: {description})"); }

topic Re: I'm trying to create multiple layers in C#. Each layer should have a unique description, but currently, the description is always the same as the layer name. Could you help me figure out ? in .NET Forum

I'm trying to create multiple layers in C#. Each layer should have a unique description, but currently, the description is always the same as the layer name. Could you help me figure out ?

Re: I'm trying to create multiple layers in C#. Each layer should have a unique description, but currently, the description is always the same as the layer name. Could you help me figure out ?

Re: I'm trying to create multiple layers in C#. Each layer should have a unique description, but currently, the description is always the same as the layer name. Could you help me figure out ?