Withevents....what do they mean?

Dim WithEvents StockInfoEventHandler As StockInfo

What does the WithEvents mean? Can someone explain what this does and what it is used for and why? Thank you.

From MSDN:

Quote:

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The WithEvents keyword allows you to create class or module-level object variables that can be used with the Handles clause in event handlers.

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So when you declare something WithEvents then you can handle events with it in this way

VB Code:

Sub myevent(event arguments goes here) Handles myobject.Event
 
some code here
 
End Sub

Yeah, it basically exposes all the events of one object to the caller so you can catch and deal with those events that are raised.

the withevents keyword has a slight performance hit in that ALL events will exposed/fired whether you want to catch them or not...well it was that way at least in VB6