Data object being navigated or modified are not as obvious as they would be with a user-defined object wrapper.
导航或修改的数据对象不如使用用户定义的对象包装器时那么明显。
Figure 2 illustrates a more robust alternative that relies on an application-defined object model to isolate the code that deals with XML in a Serialization package.
图2示范了一种更健壮的替代方案，它依靠应用程序定义的对象模型，将处理XML的代码隔离在Serialization包中。
Gets a user-defined object that qualifies or contains information about an asynchronous operation.
获取用户定义的对象，它限定或包含关于异步操作的信息。
These read-only properties appear in the Properties window when you select a user-defined object type in Server Explorer.
在服务器资源管理器中选择用户定义的对象类型后，这些只读属性将出现在“属性”窗口中。
Project references are used to access the properties, methods, and events of a defined object and apply them to your programming.
项目引用用来访问已定义对象的属性、方法和事件，并将它们应用到编程中。
Project references are used to access the properties, methods, and events of a defined object and apply them to your programming.
项目引用用来访问已定义对象的属性、方法和事件，并将它们应用到编程中。
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