Message in Chinese (Traditional) (中文（繁體）)
必須用下列方式設定 ObjectContext: 1) 定義 ContextTypeName，2) 定義 ConnectionString 和 DefaultContainerName，3) 定義 ContextType，4) 在 OnSelecting 事件中提供。
Unlocalized message
The ObjectContext must be configured by 1) defining ContextTypeName, 2) defining both ConnectionString and DefaultContainerName, 3) defining ContextType, or 4) supplying it in the OnSelecting event.
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