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Regex.Replace Method (String, String, MatchEvaluator)

Within a specified input string, replaces all strings that match a specified regular expression with a string returned by a MatchEvaluator delegate.

Namespace: System.Text.RegularExpressions
Assembly: System (in system.dll)

'Declaration
Public Shared Function Replace ( _
	input As String, _
	pattern As String, _
	evaluator As MatchEvaluator _
) As String
'Usage
Dim input As String
Dim pattern As String
Dim evaluator As MatchEvaluator
Dim returnValue As String

returnValue = Regex.Replace(input, pattern, evaluator)
public static String Replace (
	String input, 
	String pattern, 
	MatchEvaluator evaluator
)
public static function Replace (
	input : String, 
	pattern : String, 
	evaluator : MatchEvaluator
) : String
Not applicable.

Parameters

input

The string to search for a match.

pattern

The regular expression pattern to match.

evaluator

A custom method that examines each match and returns either the original matched string or a replacement string.

Return Value

A new string that is identical to the input string, except that a replacement string takes the place of each matched string.

Exception typeCondition

ArgumentNullException

input is a null reference (Nothing in Visual Basic).

-or-

pattern is a null reference (Nothing in Visual Basic).

-or-

evaluator is a null reference (Nothing in Visual Basic).

The pattern parameter consists of various regular expression language elements that symbolically describe the string to match. For more information about regular expressions, see .NET Framework Regular Expressions and Regular Expression Language Elements.

The evaluator parameter is the delegate for a custom method that you define and that examines each match. Your custom method returns a string that replaces the matched input.

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, 1.1, 1.0

.NET Compact Framework

Supported in: 2.0, 1.0

XNA Framework

Supported in: 1.0

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