public virtual void OnDataSourceSelectingHandler(
	Object sender,
	EventArgs args
)

Public Overridable Sub OnDataSourceSelectingHandler ( 
	sender As Object,
	args As EventArgs
)

public:
virtual void OnDataSourceSelectingHandler(
	Object^ sender, 
	EventArgs^ args
)

abstract OnDataSourceSelectingHandler : 
        sender : Object * 
        args : EventArgs -> unit 
override OnDataSourceSelectingHandler : 
        sender : Object * 
        args : EventArgs -> unit