This class converts alphabetic, numeric, and symbolic Unicode characters which are not in the first 127 ASCII characters (the "Basic Latin" Unicode block) into their ASCII equivalents, if one exists. Characters from the following Unicode blocks are converted; however, only those characters with reasonable ASCII alternatives are converted:

• C1 Controls and Latin-1 Supplement: http://www.unicode.org/charts/PDF/U0080.pdf
• Latin Extended-A: http://www.unicode.org/charts/PDF/U0100.pdf
• Latin Extended-B: http://www.unicode.org/charts/PDF/U0180.pdf
• Latin Extended Additional: http://www.unicode.org/charts/PDF/U1E00.pdf
• Latin Extended-C: http://www.unicode.org/charts/PDF/U2C60.pdf
• Latin Extended-D: http://www.unicode.org/charts/PDF/UA720.pdf
• IPA Extensions: http://www.unicode.org/charts/PDF/U0250.pdf
• Phonetic Extensions: http://www.unicode.org/charts/PDF/U1D00.pdf
• Phonetic Extensions Supplement: http://www.unicode.org/charts/PDF/U1D80.pdf
• General Punctuation: http://www.unicode.org/charts/PDF/U2000.pdf
• Superscripts and Subscripts: http://www.unicode.org/charts/PDF/U2070.pdf
• Enclosed Alphanumerics: http://www.unicode.org/charts/PDF/U2460.pdf
• Dingbats: http://www.unicode.org/charts/PDF/U2700.pdf
• Supplemental Punctuation: http://www.unicode.org/charts/PDF/U2E00.pdf
• Alphabetic Presentation Forms: http://www.unicode.org/charts/PDF/UFB00.pdf
• Halfwidth and Fullwidth Forms: http://www.unicode.org/charts/PDF/UFF00.pdf

See: http://en.wikipedia.org/wiki/Latin_characters_in_Unicode The set of character conversions supported by this class is a superset of those supported by Lucene's {@link ISOLatin1AccentFilter} which strips accents from Latin1 characters. For example, 'À' will be replaced by 'a'.

public sealed class ASCIIFoldingFilter : TokenFilter

Public NotInheritable Class ASCIIFoldingFilter _
	Inherits TokenFilter

public ref class ASCIIFoldingFilter sealed : public TokenFilter