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Regular Expression Engine Option
 RegexOptions Enum
  Fields
  Remarks
  Applies to
  See also
 Source/Reference

Regular Expression Engine Option

RegexOptions Enum

Provides enumerated values to use to set regular expression options.

NamespaceSystem.Text.RegularExpressions AssembliesSystem.Text.RegularExpressions.dll, System.dll, netstandard.dll
[System.Flags]
public enum RegexOptions
InheritanceObject-> ValueType->Enum->RegexOptions AttributesFlagsAttribute

Fields

Compiled 8

Specifies that the regular expression is compiled to an assembly. This yields faster execution but increases startup time. This value should not be assigned to the Options property when calling the CompileToAssembly(RegexCompilationInfo[], AssemblyName) method. For more information, see the "Compiled Regular Expressions" section in the Regular Expression Options topic.

CultureInvariant 512

Specifies that cultural differences in language is ignored. For more information, see the "Comparison Using the Invariant Culture" section in the Regular Expression Options topic.

ECMAScript 256

Enables ECMAScript-compliant behavior for the expression. This value can be used only in conjunction with the IgnoreCase, Multiline, and Compiled values. The use of this value with any other values results in an exception.

For more information on the ECMAScript option, see the "ECMAScript Matching Behavior" section in the Regular Expression Options topic.

ExplicitCapture 4

Specifies that the only valid captures are explicitly named or numbered groups of the form (?<name>...). This allows unnamed parentheses to act as noncapturing groups without the syntactic clumsiness of the expression (?:...). For more information, see the "Explicit Captures Only" section in the Regular Expression Options topic.

IgnoreCase 1

Specifies case-insensitive matching. For more information, see the "Case-Insensitive Matching " section in the Regular Expression Options topic.

IgnorePatternWhitespace 32

Eliminates unescaped white space from the pattern and enables comments marked with #. However, this value does not affect or eliminate white space in character classes, numeric quantifiers, or tokens that mark the beginning of individual regular expression language elements. For more information, see the "Ignore White Space" section of the Regular Expression Options topic.

Multiline 2

Multiline mode. Changes the meaning of ^ and $ so they match at the beginning and end, respectively, of any line, and not just the beginning and end of the entire string. For more information, see the "Multiline Mode" section in the Regular Expression Options topic.

None 0

Specifies that no options are set. For more information about the default behavior of the regular expression engine, see the "Default Options" section in the Regular Expression Options topic.

RightToLeft 64

Specifies that the search will be from right to left instead of from left to right. For more information, see the "Right-to-Left Mode" section in the Regular Expression Options topic.

Singleline 16

Specifies single-line mode. Changes the meaning of the dot (.) so it matches every character (instead of every character except \n). For more information, see the "Single-line Mode" section in the Regular Expression Options topic.

Remarks

Applies to

.NET Framework: 4.8, 4.7.2, 4.7.1, 4.7, 4.6.2, 4.6.1, 4.6, 4.5.2, 4.5.1, 4.5, 4.0, 3.5, 3.0, 2.0, 1.1

See also

Source/Reference


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References

  1. Active Server Pages,  , http://msdn.microsoft.com/en-us/library/aa286483.aspx
  2. ASP Overview,  , http://msdn.microsoft.com/en-us/library/ms524929%28v=vs.90%29.aspx
  3. ASP Best Practices,  , http://technet.microsoft.com/en-us/library/cc939157.aspx
  4. ASP Built-in Objects,  , http://msdn.microsoft.com/en-us/library/ie/ms524716(v=vs.90).aspx
  5. Response Object,  , http://msdn.microsoft.com/en-us/library/ms525405(v=vs.90).aspx
  6. Request Object,  , http://msdn.microsoft.com/en-us/library/ms524948(v=vs.90).aspx
  7. Server Object (IIS),  , http://msdn.microsoft.com/en-us/library/ms525541(v=vs.90).aspx
  8. Application Object (IIS),  , http://msdn.microsoft.com/en-us/library/ms525360(v=vs.90).aspx
  9. Session Object (IIS),  , http://msdn.microsoft.com/en-us/library/ms524319(8v=vs.90).aspx
  10. ASPError Object,  , http://msdn.microsoft.com/en-us/library/ms524942(v=vs.90).aspx
  11. ObjectContext Object (IIS),  , http://msdn.microsoft.com/en-us/library/ms525667(v=vs.90).aspx
  12. Debugging Global.asa Files,  , http://msdn.microsoft.com/en-us/library/aa291249(v=vs.71).aspx
  13. How to: Debug Global.asa files,  , http://msdn.microsoft.com/en-us/library/ms241868(v=vs.80).aspx
  14. Calling COM Components from ASP Pages,  , http://msdn.microsoft.com/en-us/library/ms524620(v=VS.90).aspx
  15. IIS ASP Scripting Reference,  , http://msdn.microsoft.com/en-us/library/ms524664(v=vs.90).aspx
  16. ASP Keywords,  , http://msdn.microsoft.com/en-us/library/ms524672(v=vs.90).aspx
  17. Creating Simple ASP Pages,  , http://msdn.microsoft.com/en-us/library/ms524741(v=vs.90).aspx
  18. Including Files in ASP Applications,  , http://msdn.microsoft.com/en-us/library/ms524876(v=vs.90).aspx
  19. ASP Overview,  , http://msdn.microsoft.com/en-us/library/ms524929(v=vs.90).aspx
  20. FileSystemObject Object,  , http://msdn.microsoft.com/en-us/library/z9ty6h50(v=vs.84).aspx
  21. http://msdn.microsoft.com/en-us/library/windows/desktop/ms675944(v=vs.85).aspx,  , ADO Object Model
  22. ADO Fundamentals,  , http://msdn.microsoft.com/en-us/library/windows/desktop/ms680928(v=vs.85).aspx
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