Blockreference and attributes

I am really struggling here, simply trying to print to command line every block and its corresponding attributes. I can get all the blocks to print, but i cant seem to get to the attributes. I get a block table record, print its name (the block name) and check using HasAttributes, and it does. But how can i get those attributes? I cant do it from by using the block table record, i think i need a block reference. But i dont know how to get a block reference, keep getting casting errors. I would post code but im on a trip and have no wifi, posting this from my phone. Thanks .

Hi,

To list all block definitions (and their attribute definitions):

Code:

---

        [CommandMethod("ListBlockDefinitions")]
        public void ListBlockDefinitions()
        {
            var doc = Application.DocumentManager.MdiActiveDocument;
            var db = doc.Database;
            var ed = doc.Editor;
            using (var tr = db.TransactionManager.StartTransaction())
            {
                var bt = (BlockTable)tr.GetObject(db.BlockTableId, OpenMode.ForRead);
                foreach (ObjectId id in bt)
                {
                    var btr = (BlockTableRecord)tr.GetObject(id, OpenMode.ForRead);
                    if (!(btr.IsLayout || btr.IsAnonymous || btr.IsFromExternalReference || btr.IsFromOverlayReference))
                    {
                        ed.WriteMessage($"\n{btr.Name}");
                        if (btr.HasAttributeDefinitions)
                        {
                            foreach (ObjectId attId in btr)
                            {
                                if (attId.ObjectClass.Name == "AcDbAttributeDefinition")
                                {
                                    var attDef = (AttributeDefinition)tr.GetObject(attId, OpenMode.ForRead);
                                    ed.WriteMessage($"\n\t{attDef.Tag}");
                                }
                            }
                        }
                    }
                }
                tr.Commit();
            }
        }

---

To list all block references (an their attribute references):

Code:

---

        [CommandMethod("ListBlockReferences")]
        public void ListBlockReferences()
        {
            var doc = Application.DocumentManager.MdiActiveDocument;
            var db = doc.Database;
            var ed = doc.Editor;
            using (var tr = db.TransactionManager.StartTransaction())
            {
                var bt = (BlockTable)tr.GetObject(db.BlockTableId, OpenMode.ForRead);
                foreach (ObjectId id in bt)
                {
                    var btr = (BlockTableRecord)tr.GetObject(id, OpenMode.ForRead);
                    if (!(btr.IsLayout || btr.IsAnonymous || btr.IsFromExternalReference || btr.IsFromOverlayReference))
                    {
                        foreach (ObjectId brId in btr.GetBlockReferenceIds(true, true))
                        {
                            var br = (BlockReference)tr.GetObject(brId, OpenMode.ForRead);
                            ed.WriteMessage($"\n{br.Name}");
                            foreach (ObjectId attId in br.AttributeCollection)
                            {
                                var attRef = (AttributeReference)tr.GetObject(attId, OpenMode.ForRead);
                                ed.WriteMessage($"\n\t{attRef.Tag} = {attRef.TextString}");
                            }
                        }
                        if (btr.IsDynamicBlock)
                        {
                            foreach (ObjectId btrId in btr.GetAnonymousBlockIds())
                            {
                                var anonymousBtr = (BlockTableRecord)tr.GetObject(btrId, OpenMode.ForRead);
                                foreach (ObjectId brId in anonymousBtr.GetBlockReferenceIds(true, true))
                                {
                                    var br = (BlockReference)tr.GetObject(brId, OpenMode.ForRead);
                                    ed.WriteMessage($"\n{btr.Name} ({anonymousBtr.Name})");
                                    foreach (ObjectId attId in br.AttributeCollection)
                                    {
                                        var attRef = (AttributeReference)tr.GetObject(attId, OpenMode.ForRead);
                                        ed.WriteMessage($"\n\t{attRef.Tag} = {attRef.TextString}");
                                    }
                                }
                            }
                        }
                    }
                }
                tr.Commit();
            }
        }

---

Thank you very much gile (yet again)...i was soooo close! Making alot of beginner mistakes right now, i truly appreciate your help.