'Declaration
 
Public Event UpdateData As EventHandler

'Usage
 
Dim instance As DataManager
Dim handler As EventHandler
 
AddHandler instance.UpdateData, handler

public event EventHandler UpdateData

When the data changes in one portion of the application or by the application running on another computer, it is typically desirable to communicate that a change in the data has occurred to the other windows of this application. Any window interested in knowing when the data has changed can subscribe to this event and will be notified when the data has changed. If a particular local window changes the data, it can raise this event by calling the OnUpdateData method of this class which will then raise the event for the other subscribers. This design has the drawback that there is no indication of what data has changed - the event is currently raised by the middle-tier for any kind of data change.

Reference

DataManager Class
DataManager Members