# UnicodeCategory Enumeration

.NET Framework 2.0

Defines the Unicode category of a character.

Namespace: System.Globalization
Assembly: mscorlib (in mscorlib.dll)

## Syntax

```[SerializableAttribute]
[ComVisibleAttribute(true)]
public enum UnicodeCategory
```
```/** @attribute SerializableAttribute() */
/** @attribute ComVisibleAttribute(true) */
public enum UnicodeCategory
```
```SerializableAttribute
ComVisibleAttribute(true)
public enum UnicodeCategory
```

## Members

Member nameDescription
ClosePunctuationIndicates 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.
ConnectorPunctuationIndicates that the character is a connector punctuation, which connects two characters. Signified by the Unicode designation "Pc" (punctuation, connector). The value is 18.
ControlIndicates 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.
CurrencySymbolIndicates that the character is a currency symbol. Signified by the Unicode designation "Sc" (symbol, currency). The value is 26.
DashPunctuationIndicates that the character is a dash or a hyphen. Signified by the Unicode designation "Pd" (punctuation, dash). The value is 19.
DecimalDigitNumberIndicates 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.
EnclosingMarkIndicates 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.
FinalQuotePunctuationIndicates that the character is a closing or final quotation mark. Signified by the Unicode designation "Pf" (punctuation, final quote). The value is 23.
FormatIndicates 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.
InitialQuotePunctuationIndicates that the character is an opening or initial quotation mark. Signified by the Unicode designation "Pi" (punctuation, initial quote). The value is 22.
LetterNumberIndicates 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.
LineSeparatorIndicates that the character is used to separate lines of text. Signified by the Unicode designation "Zl" (separator, line). The value is 12.
LowercaseLetterIndicates that the character is a lowercase letter. Signified by the Unicode designation "Ll" (letter, lowercase). The value is 1.
MathSymbolIndicates that the character is a mathematical symbol, such as '+' or '= '. Signified by the Unicode designation "Sm" (symbol, math). The value is 25.
ModifierLetterIndicates 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.
ModifierSymbolIndicates 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.
NonSpacingMarkIndicates 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.
OpenPunctuationIndicates 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.
OtherLetterIndicates 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.
OtherNotAssignedIndicates that the character is not assigned to any Unicode category. Signified by the Unicode designation "Cn" (other, not assigned). The value is 29.
OtherNumberIndicates 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.
OtherPunctuationIndicates 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.
OtherSymbolIndicates 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.
ParagraphSeparatorIndicates that the character is used to separate paragraphs. Signified by the Unicode designation "Zp" (separator, paragraph). The value is 13.
PrivateUseIndicates 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.
SpaceSeparatorIndicates 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.
SpacingCombiningMarkIndicates 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.
SurrogateIndicates 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.
TitlecaseLetterIndicates that the character is a titlecase letter. Signified by the Unicode designation "Lt" (letter, titlecase). The value is 2.
UppercaseLetterIndicates that the character is an uppercase letter. Signified by the Unicode designation "Lu" (letter, uppercase). The value is 0.

## 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.

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

## Platforms

Windows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.

## Version Information

#### .NET Framework

Supported in: 2.0, 1.1, 1.0

#### .NET Compact Framework

Supported in: 2.0, 1.0