/// <summary> /// Defines a block attribute. /// </summary> /// <param name="blockName">The block name.</param> /// <param name="tag">The tag.</param> /// <param name="value">The value.</param> /// <param name="prompt">The prompt.</param> /// <param name="position">The position.</param> /// <param name="style">The style.</param> public static void DefineBlockAttribute(string blockName, string tag, string value, string prompt, Point3d position, ObjectId style) { var ad = new AttributeDefinition(position, value, tag, prompt, style); using (var trans = HostApplicationServices.WorkingDatabase.TransactionManager.StartTransaction()) { var block = trans.GetObject(DbHelper.GetBlockId(blockName), OpenMode.ForWrite) as BlockTableRecord; block.AppendEntity(ad); trans.AddNewlyCreatedDBObject(ad, true); trans.Commit(); } }