Civil 3D Points

Use this skill when working with COGO points - creating, querying, grouping, styling, or using description keys.

Points Collection

All points are in CivilDocument.CogoPoints (CogoPointCollection):

CogoPointCollection cogoPoints = doc.CogoPoints;

// Add individual point (useNextPointNumSetting: true = auto-assign number)
ObjectId pointId = cogoPoints.Add(new Point3d(4958, 4079, 200), true);

// Add with description
ObjectId pointId2 = cogoPoints.Add(new Point3d(100, 200, 225), "GRND", true);