Message in Chinese (Simplified) (中文(简体))![](/img/flags/zh-Hans.png)
实体类型“<var>Type Name</var>”是从标记为 DataContractAttribute 的类型“X”派生的,因此必须标记为 DataContractAttribute。
Unlocalized message![](/img/flags/en.png)
The entity type '<var>Type Name</var>' must be marked with DataContractAttribute since it derives from type 'X' which is marked with DataContractAttribute.
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