How do I change RichTextBox paragraph spacing?

Question

I am using a RichTextBox in WPF, and am trying to set the default paragraph spacing to 0 (so that there is no paragraph spacing). While I could do this in XAML, I would lik

Answer 1

RichTextBox rtb = new RichTextBox();
rtb.SetValue(Paragraph.LineHeightProperty, 1.0);