Snippet that shows all available fonts.

AvailableFonts

    NSArray *fontFamilyNames = [UIFont familyNames];

    for (NSString *familyName in fontFamilyNames)
    {
        NSLog(@"Font Family Name: %@", familyName);
        
        NSArray *names = [UIFont fontNamesForFamilyName:familyName];
        
        NSLog(@"Font Names:\n %@", names);
    }
    
    //xamarin:
    string[] fonts = UIFont.FamilyNames;
	for (int i = 0; i < fonts.Length; i++) {
		string[] names = UIFont.FontNamesForFamilyName(fonts[i]);
		for (int j = 0; j < names.Length; j++)
			Console.WriteLine (names [j]);
	}