Occurs before a data retrieval operation.
'Usage Dim instance As SqlDataSource Dim handler As SqlDataSourceSelectingEventHandler AddHandler instance.Selecting, handler 'Declaration Public Event Selecting As SqlDataSourceSelectingEventHandler
<asp:SqlDataSource OnSelecting="SqlDataSourceSelectingEventHandler" />
Handle the Selecting event to perform additional initialization operations that are specific to your application, to validate the values of parameters, or to change the parameter values before the SqlDataSource control performs the select operation. The select arguments are available from the SqlDataSourceSelectingEventArgs object that is associated with the event.
For more information about handling events, see Consuming Events.
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