Public Delegate Sub StateChangedHandler( _
   ByVal sender As System.Object, _
   ByVal e As StateChangedArgs _
) 

public delegate void StateChangedHandler( 
   System.object sender,
   StateChangedArgs e
)

Parameters

sender

Source of the event.

e

An EventArgs value that contains the event data.

Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

Reference