此浏览器不再受支持。 请升级到 Microsoft Edge 以使用最新的功能、安全更新和技术支持。 以下代码列表演示如何使用 ADO.NET 数据提供程序从数据库中检索数据。 数据在一个 DataReader 中返回。 有关详细信息，请参阅使用 DataReader 检索数据。 SqlClient 若要使用 ADO.NET ...

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