Message in Chinese (Traditional) (中文（繁體）)
DomainService '<var>Y</var>' 中的實體 '<var>X</var>' 未定義索引鍵。DomainService 作業公開的實體型別至少必須有一個標記著 KeyAttribute 的公用屬性。
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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