Message in Chinese (Traditional) (中文(繁體))
指定的轉型 (從具體化 '<var>X</var>' 型別轉型為可為 Null 的 '<var>Y</var>' 型別) 無效。
Unlocalized message
The specified cast from a materialized '<var>X</var>' type to a nullable '<var>Y</var>' type is not valid.
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