Message in Chinese (Simplified) (中文(简体))
DomainService“<var>Y</var>”中的实体“<var>X</var>”未定义密钥。DomainService 操作公开的实体类型必须至少有一个标记为 KeyAttribute 的公共属性。
Unlocalized message
The Entity '<var>X</var>' in DomainService '<var>Y</var>' does not have a key defined. Entity types exposed by DomainService operations must have at least one public property marked with the KeyAttribute.
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