FormattedText.SetFontFamily Method (String)
Sets the font family for the entire set of characters in the FormattedText object.
Assembly: PresentationCore (in PresentationCore.dll)
This method sets the font family value for the entire text string. To set the font family value for a subset of the text string, use the SetFontFamily(String, Int32, Int32) method.
Available since 3.0