Provides the markup that is used to render the control at design time if the control is empty or if the data source cannot be retrieved.
The markup used to render the control at design time with an empty data source.
The System.Web.UI.Design.WebControls.BaseDataBoundControlDesigner class retrieves sample data that is used for binding purposes at design time before rendering the control. The empty design-time control renders as a placeholder that contains the type name and control name.