// Editor Ed = Application.DocumentManager.MdiActiveDocument.Editor;
//Database Db = Application.DocumentManager.MdiActiveDocument.Database;
using (var trans = Db.TransactionManager.StartTransaction())
{

          var obj= trans.GetObject(Db.UcsTableId, OpenMode.ForRead);

            UcsTable t = obj as UcsTable;

            if (t != null)
            {
                foreach (var oId in t)
                {
                    var uceRec = trans.GetObject(oId,OpenMode.ForRead) as UcsTableRecord;
                    //XAxis是向量
                    Ed.WriteMessage("\n orange=[" + uceRec.Origin.X+","+ uceRec.Origin.Y + "," + uceRec.Origin.Z+ "]\n " 
                        +"XAxis:["+ uceRec.XAxis.X +","+ uceRec.XAxis.Y+ ","+","+ uceRec.XAxis.Z+ "]\n");

                }


            }

        }