它们全都可以用来从它们各自类型的数据源中检索数据，并且可以绑定到各种数据绑定控件。
They all can be used to retrieve data from their respective types of data sources and can be bound to various data-bound controls.
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。
To use the data source controls you must have a data-bound control to bind them to.
NET 2.0引入了一系列可以改善数据访问的新工具，包括几个数据源和数据绑定控件。
ASP.NET 2.0 introduces a series of new tools that improve data access including several data source and data bound controls.
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