using Autodesk.AutoCAD.Runtime; using Autodesk.AutoCAD.ApplicationServices; using Autodesk.AutoCAD.DatabaseServices; using Autodesk.AutoCAD.Geometry; public class BlockCreation [CommandMethod("CreateMyBlock")] public void CreateBlockDefinition() Document doc = Application.DocumentManager.MdiActiveDocument; Database db = doc.Database; using (Transaction trans = db.TransactionManager.StartTransaction()) // Open the Block Table for Write BlockTable blkTable = trans.GetObject(db.BlockTableId, OpenMode.ForWrite) as BlockTable; string blockName = "Custom_Rectangle"; // Check if the block already exists if (!blkTable.Has(blockName)) using (BlockTableRecord newBlockDef = new BlockTableRecord()) newBlockDef.Name = blockName; // Set the base insertion point of the block newBlockDef.Origin = new Point3d(0, 0, 0); // Create geometry to place inside the block definition using (Polyline poly = new Polyline()) poly.AddVertexAt(0, new Point2d(0, 0), 0, 0, 0); poly.AddVertexAt(1, new Point2d(10, 0), 0, 0, 0); poly.AddVertexAt(2, new Point2d(10, 5), 0, 0, 0); poly.AddVertexAt(3, new Point2d(0, 5), 0, 0, 0); poly.Closed = true; // Add the entity to the block definition record newBlockDef.AppendEntity(poly); trans.AddNewlyCreatedDBObject(poly, true); // Add the new block definition to the Block Table blkTable.Add(newBlockDef); trans.AddNewlyCreatedDBObject(newBlockDef, true); doc.Editor.WriteMessage($"\nBlock 'blockName' created successfully."); else doc.Editor.WriteMessage($"\nBlock 'blockName' already exists."); trans.Commit(); Use code with caution. Inserting a Block Reference
Many firms think they have a Block Net because they have an "S:/Blocks/" drive. That is a file repository, not a "net." A real utilizes External References (Xrefs) or Dynamic Blocks linked via Tool Palettes or DesignCenter with absolute paths that point to a master server. autocad block net
using Autodesk.AutoCAD.Runtime; using Autodesk.AutoCAD.ApplicationServices; using Autodesk.AutoCAD.DatabaseServices; using Autodesk.AutoCAD.Geometry; [CommandMethod("CreateMyBlock")] public void CreateBlockDefinition() Document doc = Application.DocumentManager.MdiActiveDocument; Database db = doc.Database; using (Transaction tr = db.TransactionManager.StartTransaction()) BlockTable bt = tr.GetObject(db.BlockTableId, OpenMode.ForWrite) as BlockTable; string blockName = "EngineeredCircle"; // Check if the block already exists if (!bt.Has(blockName)) using (BlockTableRecord btr = new BlockTableRecord()) btr.Name = blockName; btr.Origin = new Point3d(0, 0, 0); // Base point // Add geometry to the block definition using (Circle circle = new Circle(new Point3d(0, 0, 0), Vector3d.ZAxis, 5.0)) btr.AppendEntity(circle); tr.AddNewlyCreatedDBObject(circle, true); // Append the definition to the Block Table bt.Add(btr); tr.AddNewlyCreatedDBObject(btr, true); tr.Commit(); Use code with caution. Inserting a Block Reference using Autodesk
Enter the concept of the .
To build .NET applications for AutoCAD, you need to create a Class Library project targeted at the appropriate .NET framework based on your AutoCAD version (e.g., .NET 8 or .NET Core for modern AutoCAD versions, or .NET Framework 4.8 for older editions). Required References Required References