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StringComparison Enumeration

Specifies the culture, case, and sort rules to be used by certain overloads of the String.Compare and String.Equals methods.

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

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

 Member nameDescription
Supported by the .NET Compact FrameworkCurrentCultureCompare strings using culture-sensitive sort rules and the current culture. 
Supported by the .NET Compact FrameworkCurrentCultureIgnoreCaseCompare strings using culture-sensitive sort rules, the current culture, and ignoring the case of the strings being compared. 
Supported by the .NET Compact FrameworkInvariantCultureCompare strings using culture-sensitive sort rules and the invariant culture. 
Supported by the .NET Compact FrameworkInvariantCultureIgnoreCaseCompare strings using culture-sensitive sort rules, the invariant culture, and ignoring the case of the strings being compared. 
Supported by the .NET Compact FrameworkOrdinalCompare strings using ordinal sort rules. 
Supported by the .NET Compact FrameworkOrdinalIgnoreCaseCompare strings using ordinal sort rules and ignoring the case of the strings being compared. 

The StringComparison enumeration is used to specify whether a string comparison should use the current culture or the invariant culture, word or ordinal sort rules, and be case-sensitive or case-insensitive.

An operation that uses word sort rules performs a culture-sensitive comparison wherein certain nonalphanumeric Unicode characters might have special weights assigned to them. Using word sort rules and the conventions of a specific culture, the hyphen ("-") might have a very small weight assigned to it so that "coop" and "co-op" appear next to each other in a sorted list.

An operation that uses ordinal sort rules performs a comparison based on the numeric value (Unicode code point) of each Char in the string. An ordinal comparison is fast, but culture-insensitive. Using ordinal sort rules a string that starts with some Unicode character, U+xxxx, comes before a string that starts with some Unicode character, U+yyyy, if the value of xxxx is numerically less than yyyy.

For more information about comparisons, see the System.String class remarks. For more information about culture, see the System.Globalization.CultureInfo class remarks.

Windows 98, Windows Server 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 Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0

.NET Compact Framework

Supported in: 2.0

XNA Framework

Supported in: 1.0

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