public FontFamily(string name, FontCollection fontCollection)
{
if (name == null)
{
throw new ArgumentNullException("name");
}
if (fontCollection == null)
{
fontCollection = _installedFonts;
}
if (fontCollection.Contains(name))
{
_name = name;
}
else
{
_name = ToGenericFontName(GenericFontFamilies.SansSerif);
fontCollection = _installedFonts;
}
_font = fontCollection.GetInitialFont(_name);
}