Calls the databind method of the DropDownList control to bind the data to the control.

调用DropDownList控件的databind方法把数据绑定到控件中。

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Note that the GridView control also supports the classic binding mechanism based on the DataSource property and the DataBind method.

注意，GridView控件也支持传统的基于DataSource属性和DataBind方法的绑定机制。

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