Mouse scroll not working in a scroll viewer with a wpf datagrid and additional UI elements

Question

I am trying to figure out how to get the mouse scroll working on a wpf window with a scrollviewer and a datagrid within it. The WPF and C# code is below

Answer 1

Guys I`ve seen most of the solution posted over here and fundamentally all of them are right, but I think there is an easiest and more elegant syntax that we could apply.

Assuming that we don't need to scroll with our data grid and instead we would like to scroll with our MainWindow

fallowing "Dave" and "Vladim Tofan" answer

Private Void Scrlll(Object sebder, MouseWheelEventArgs e)
{
   var windows = (Window.GetWindow(this) as MainWindow).MainScroll;
   windows.ScrollToVerticalOffset(windows.VerticalOffset - e.Delta);
}

Sorry, for bad english.