To use the data source controls you must have a data-bound control to bind them to.

要使用数据源控件，必须具有一个用来将它们绑定到的数据绑定控件。

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When loading an ASP.NET page that contains a data-bound control linked to a SqlDataSource, the SqlDataSource communicates directly with an underlying database.

当加载包含链接到SqlDataSource的数据绑定控件的ASP.NET页时，SqlDataSource直接与基础数据库进行通信。

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Set the data-bound control as needed to allow updateability.

根据需要设置数据绑定控件以允许更新。

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