Install AutoCAD Map 3D or Civil 3D. Learn the MAPCONNECT command. Point it at your SQL Server. If you are a DBA: Create a geometry column in your asset table. Grant the AutoCAD users SELECT and UPDATE permissions on that column.
CREATE VIEW dbo.ParcelsWithArea AS SELECT ParcelID, OwnerName, Shape.STArea() AS SqMeters, Shape FROM dbo.Parcels; Connect AutoCAD to the view , not the table. Now every polygon automatically displays its calculated area. Before a surveyor saves a new boundary, a SQL Server trigger can validate the geometry: sql server spatial autocad
conn.Open(); string wkt = polyline.ToWkt(); // Using Teigha or RealDWG APIs SqlCommand cmd = new SqlCommand( "INSERT INTO Features (Geom) VALUES (geometry::STGeomFromText(@wkt, 0))", conn); cmd.Parameters.AddWithValue("@wkt", wkt); cmd.ExecuteNonQuery(); Install AutoCAD Map 3D or Civil 3D
The era of exporting a DWG to SHP, then SHP to SQL, then editing, then re-exporting back to DWG is over. If you are a DBA: Create a geometry
CREATE TRIGGER trg_CheckClosed ON dbo.Parcels INSTEAD OF INSERT AS BEGIN IF EXISTS (SELECT * FROM inserted WHERE Shape.STIsClosed() = 0) BEGIN THROW 50001, 'Polygon is not closed', 1; END -- Insert valid data END; | AutoCAD Expectation | SQL Server Reality | Fix | | :--- | :--- | :--- | | 10,000 lines (instant load) | 10,000 polygons (slow load) | Create a spatial index with BOUNDING_BOX matching your DWG extents. | | Annotations rotate with view | Text is static | Store annotation as separate geometry points; use Map 3D's Dynamic Annotation . | | Undo/Redo is infinite | Undo requires a commit | Set AutoCAD Autosave to 5 minutes. | | Coordinate system: assumed | Coordinate system: explicit | Always set SRID (Spatial Reference ID). For DWG feet: SRID = 0 (geometry). For lat/lon: SRID = 4326 (geography). | Code Sample: Convert a DWG Polyline to SQL Server Geometry If you are writing a .NET plugin for AutoCAD using C#, you can directly insert into SQL Server: