Message in Chinese (Simplified) (中文(简体))

无法完成此操作，因为找不到所需的元数据。尝试该操作之前，请确保 ObjectContext 使用的连接已打开。

Unlocalized message

The operation could not be completed because the required metadata could not be found. Make sure that the connection used by the ObjectContext is open before attempting this operation.

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