Information
The topic you requested is included in another documentation set. For convenience, it's displayed below. Choose Switch to see the topic in its original location.

UnicodeCategory Enumeration

Defines the Unicode category of a character.

[Visual Basic]
<Serializable>
Public Enum UnicodeCategory
[C#]
[Serializable]
public enum UnicodeCategory
[C++]
[Serializable]
__value public enum UnicodeCategory
[JScript]
public
   Serializable
enum UnicodeCategory

Remarks

The Unicode Standard defines the following:

A surrogate pair is a coded character representation for a single abstract character that consists of a sequence of two code units, where the first unit of the pair is a high-surrogate and the second is a low-surrogate. A high-surrogate is a Unicode code point in the range U+D800 through U+DBFF and a low-surrogate is a Unicode code point in the range U+DC00 through U+DFFF.

A combining character sequence is a combination of a base character and one or more combining characters. A surrogate pair can represent a base character or a combining character. A combining character can be spacing or nonspacing. A spacing combining character takes up a spacing position by itself, when rendered; whereas, a nonspacing combining character does not. Diacritics are an example of nonspacing combining characters.

A modifier letter is a free-standing spacing character that, like a combining character, indicates modifications of a preceding letter.

An enclosing mark is a nonspacing combining character that surrounds all previous characters up to and including a base character.

A format character is a character that is not normally rendered but that affects the layout of text or the operation of text processes.

The Unicode Standard defines several variations to some punctuation marks. For example, a hyphen can be one of several code values that represent a hyphen, such as U+002D (hyphen-minus) or U+00AD (soft hyphen) or U+2010 (hyphen) or U+2011 (nonbreaking hyphen). The same is true for dashes, space characters, and quotation marks.

The Unicode Standard also assigns codes to representations of decimal digits that are specific to a given script or language; for example, U+0030 (digit zero) and U+0660 (Arabic-Indic digit zero).

This enumeration is based on The Unicode Standard, Version 3.1.

For more information, see The Unicode Standard at http://www.unicode.org.

This enumeration is used to support Char methods, such as IsUpper.

Members

Member name Description
ClosePunctuation

Supported by the .NET Compact Framework.

Indicates that the character is the closing character of one of the paired punctuation marks, such as parentheses, square brackets, and braces. Signified by the Unicode designation "Pe" (punctuation, close). The value is 21.
ConnectorPunctuation

Supported by the .NET Compact Framework.

Indicates that the character is a connector punctuation, which connects two characters. Signified by the Unicode designation "Pc" (punctuation, connector). The value is 18.
Control

Supported by the .NET Compact Framework.

Indicates that the character is a control code, whose Unicode value is U+007F or in the range U+0000 through U+001F or U+0080 through U+009F. Signified by the Unicode designation "Cc" (other, control). The value is 14.
CurrencySymbol

Supported by the .NET Compact Framework.

Indicates that the character is a currency symbol. Signified by the Unicode designation "Sc" (symbol, currency). The value is 26.
DashPunctuation

Supported by the .NET Compact Framework.

Indicates that the character is a dash or a hyphen. Signified by the Unicode designation "Pd" (punctuation, dash). The value is 19.
DecimalDigitNumber

Supported by the .NET Compact Framework.

Indicates that the character is a decimal digit; that is, in the range 0 through 9. Signified by the Unicode designation "Nd" (number, decimal digit). The value is 8.
EnclosingMark

Supported by the .NET Compact Framework.

Indicates that the character is an enclosing mark, which is a nonspacing combining character that surrounds all previous characters up to and including a base character. Signified by the Unicode designation "Me" (mark, enclosing). The value is 7.
FinalQuotePunctuation

Supported by the .NET Compact Framework.

Indicates that the character is a closing or final quotation mark. Signified by the Unicode designation "Pf" (punctuation, final quote). The value is 23.
Format

Supported by the .NET Compact Framework.

Indicates that the character is a format character, which is not normally rendered but affects the layout of text or the operation of text processes. Signified by the Unicode designation "Cf" (other, format). The value is 15.
InitialQuotePunctuation

Supported by the .NET Compact Framework.

Indicates that the character is an opening or initial quotation mark. Signified by the Unicode designation "Pi" (punctuation, initial quote). The value is 22.
LetterNumber

Supported by the .NET Compact Framework.

Indicates that the character is a number represented by a letter, instead of a decimal digit; for example, the Roman numeral for five, which is 'V'. Signified by the Unicode designation "Nl" (number, letter). The value is 9.
LineSeparator

Supported by the .NET Compact Framework.

Indicates that the character is used to separate lines of text. Signified by the Unicode designation "Zl" (separator, line). The value is 12.
LowercaseLetter

Supported by the .NET Compact Framework.

Indicates that the character is a lowercase letter. Signified by the Unicode designation "Ll" (letter, lowercase). The value is 1.
MathSymbol

Supported by the .NET Compact Framework.

Indicates that the character is a mathematical symbol, such as '+' or '= '. Signified by the Unicode designation "Sm" (symbol, math). The value is 25.
ModifierLetter

Supported by the .NET Compact Framework.

Indicates that the character is a modifier letter, which is free-standing spacing character that indicates modifications of a preceding letter. Signified by the Unicode designation "Lm" (letter, modifier). The value is 3.
ModifierSymbol

Supported by the .NET Compact Framework.

Indicates that the character is a modifier symbol, which indicates modifications of surrounding characters; for example, the fraction slash indicates that the number to the left is the numerator and the number to the right is the denominator. Signified by the Unicode designation "Sk" (symbol, modifier). The value is 27.
NonSpacingMark

Supported by the .NET Compact Framework.

Indicates that the character is a nonspacing character, which indicates modifications of a base character. Signified by the Unicode designation "Mn" (mark, nonspacing). The value is 5.
OpenPunctuation

Supported by the .NET Compact Framework.

Indicates that the character is the opening character of one of the paired punctuation marks, such as parentheses, square brackets, and braces. Signified by the Unicode designation "Ps" (punctuation, open). The value is 20.
OtherLetter

Supported by the .NET Compact Framework.

Indicates that the character is a letter that is not an uppercase letter, a lowercase letter, a titlecase letter, or a modifier letter. Signified by the Unicode designation "Lo" (letter, other). The value is 4.
OtherNotAssigned

Supported by the .NET Compact Framework.

Indicates that the character is not assigned to any Unicode category. Signified by the Unicode designation "Cn" (other, not assigned). The value is 29.
OtherNumber

Supported by the .NET Compact Framework.

Indicates that the character is a number that is neither a decimal digit nor a letter number; for example, the fraction 1/2. Signified by the Unicode designation "No" (number, other). The value is 10.
OtherPunctuation

Supported by the .NET Compact Framework.

Indicates that the character is a punctuation that is not a connector punctuation, a dash punctuation, an open punctuation, a close punctuation, an initial quote punctuation, or a final quote punctuation. Signified by the Unicode designation "Po" (punctuation, other). The value is 24.
OtherSymbol

Supported by the .NET Compact Framework.

Indicates that the character is a symbol that is not a mathematical symbol, a currency symbol or a modifier symbol. Signified by the Unicode designation "So" (symbol, other). The value is 28.
ParagraphSeparator

Supported by the .NET Compact Framework.

Indicates that the character is used to separate paragraphs. Signified by the Unicode designation "Zp" (separator, paragraph). The value is 13.
PrivateUse

Supported by the .NET Compact Framework.

Indicates that the character is a private-use character, whose Unicode value is in the range U+E000 through U+F8FF. Signified by the Unicode designation "Co" (other, private use). The value is 17.
SpaceSeparator

Supported by the .NET Compact Framework.

Indicates that the character is a space character, which has no glyph but is not a control or format character. Signified by the Unicode designation "Zs" (separator, space). The value is 11.
SpacingCombiningMark

Supported by the .NET Compact Framework.

Indicates that the character is a spacing character, which indicates modifications of a base character and affects the width of the glyph for that base character. Signified by the Unicode designation "Mc" (mark, spacing combining). The value is 6.
Surrogate

Supported by the .NET Compact Framework.

Indicates that the character is a high-surrogate or a low-surrogate. Surrogate code values are in the range U+D800 through U+DFFF. Signified by the Unicode designation "Cs" (other, surrogate). The value is 16.
TitlecaseLetter

Supported by the .NET Compact Framework.

Indicates that the character is a titlecase letter. Signified by the Unicode designation "Lt" (letter, titlecase). The value is 2.
UppercaseLetter

Supported by the .NET Compact Framework.

Indicates that the character is an uppercase letter. Signified by the Unicode designation "Lu" (letter, uppercase). The value is 0.

Requirements

Namespace: System.Globalization

Platforms: Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 family, .NET Compact Framework

Assembly: Mscorlib (in Mscorlib.dll)

See Also

System.Globalization Namespace | System.Text.UnicodeEncoding

Was this page helpful?
(1500 characters remaining)
Thank you for your feedback
Show:
© 2014 Microsoft