Retrieves the selected data source component from the container of the associated System.Web.UI.WebControls.Repeater control.
The selected data source; null if a data source is not found or if a data source with the selected name does not exist.
The RepeaterDesigner.GetSelectedDataSource method uses the System.Web.UI.Design.DesignTimeData.GetSelectedDataSource(System.ComponentModel.IComponent, string) method to construct a data source from the object that is specified by the RepeaterDesigner.DataSource property.