diff --git a/src/DatabaseServices/ObjectAllDataHistoryRecord.ts b/src/DatabaseServices/ObjectAllDataHistoryRecord.ts
index 67e21f180..cc2b20e5f 100644
--- a/src/DatabaseServices/ObjectAllDataHistoryRecord.ts
+++ b/src/DatabaseServices/ObjectAllDataHistoryRecord.ts
@@ -5,7 +5,6 @@ import { HistorycRecord } from './HistorycRecord';
 import { ObjectId } from './ObjectId';
 
 
-
 @Factory
 export class ObjectAllDataHistoryRecord extends HistorycRecord
 {
@@ -27,14 +26,6 @@ export class ObjectAllDataHistoryRecord extends HistorycRecord
     }
 
     //#region -------------------------File-------------------------
-    //对象应该实现dataIn和DataOut的方法,为了对象的序列化和反序列化
-
-    //类名,保证序列化时得到正确的new
-    get ClassName(): string
-    {
-        return "CADObject";
-    }
-
     //对象从文件中读取数据,初始化自身
     ReadFile(file: CADFile)
     {