'Declaration
 
Protected Overridable Sub OnCloseButtonClicked( _
   ByVal e As RoutedEventArgs _
) 

'Usage
 
Dim instance As MessageBox
Dim e As RoutedEventArgs
 
instance.OnCloseButtonClicked(e)

protected virtual void OnCloseButtonClicked( 
   RoutedEventArgs e
)

Parameters

e

Target Platforms: Windows 11, Windows 10, 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

MessageBox Class
MessageBox Members