How to enable horizontal scrolling with mouse?

Question

I cannot determine how to scroll horizontally using the mouse wheel. Vertical scrolling works well automatically, but I need to scroll my content horizontally. My code looks lik

Answer 1

I was kinda looking for the most simple way to make any ScrollViewer scroll left-right instead of up-down. So here is the simplest combination of the other answers.

and:

private void ScrollViewer_PreviewMouseWheel(object sender, MouseWheelEventArgs e)
{
    ScrollViewer scrollViewer = (ScrollViewer)sender;
    if (e.Delta < 0)
    {
        scrollViewer.LineRight();
    }
    else
    {
        scrollViewer.LineLeft();
    }
    e.Handled = true;
}

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This is basically what John Gardner suggested just with the actual code. I'm also quoting my answer from similar question here.