How to find Vertical Scrollbar width of a Scrollviewer in C#

Question

I have a ScrollViewer and in that I am showing the Vertical Scrollbar, Now on changing resolution of the system I want to get the width of the scrollbar. I went through One

Answer 1

I think SystemParameters.VerticalScrollBarWidth is what you are looking for.

Answer 2

I am not sure if this is the correct answer. Every WPF control can be restyled so even the scrollbar. So SystemParameters.VerticalScrollBarWidth works only if it is used as default scrollbar. The correct solution would be to find the vertical scrollbar in the visual tree and measure it's ActualWidth. It is the most precise measurement.