AutoCAD .Net 遍历组

以下代码展示如何遍历 AutoCAD 文档中的组。

Document doc = Application.DocumentManager.MdiActiveDocument;Database db = doc.Database;using (Transaction tr = db.TransactionManager.StartTransaction()){    DBDictionary groups = tr.GetObject(db.GroupDictionaryId,        OpenMode.ForRead) as DBDictionary;    // 遍历所有的组    foreach (DBDictionaryEntry entry in groups)    {        Group group = tr.GetObject(entry.Value, OpenMode.ForRead) as Group;        ObjectId[] ids = group.GetAllEntityIds();        // 遍历组下的图元        foreach (ObjectId oid in ids)        {            Entity entity = tr.GetObject(oid, OpenMode.ForRead) as Entity;        }        doc.Editor.WriteMessage("Group: {0} 包含 {1} 个图元\n", group.Name, ids.Length);    }    tr.Commit();}

参考文章：
Iterating through the group dictionary