Sub EndUpdate() 

void EndUpdate()

void DoSomeThreadSafeWorkQuickly(IWorkbookSet workbookSet)
        {
            // Interrupt background calculation if necessary, acquire an
            // exclusive lock on the workbook set and suspend events and
            // painting.
            workbookSet.BeginUpdate();
 
            try {
                // Do a lot of work...
            }
            finally {
                // Release the lock on the workbook set, start background
                // calculation if appropriate and repaint controls.
                workbookSet.EndUpdate();
            }
        }

Sub DoSomeThreadSafeWorkQuickly(ByVal workbookSet As IWorkbookSet)
            ' Interrupt background calculation if necessary, acquire an 
            ' exclusive lock on the workbook set and suspend events and
            ' painting.
            workbookSet.BeginUpdate()
 
            Try
                ' Do a lot of work... 
            Finally
                ' Release the lock on the workbook set, start background 
                ' calculation if appropriate and repaint controls.
                workbookSet.EndUpdate()
            End Try
        End Sub 'DoSomeThreadSafeWork