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Regex.Replace Method (String, String)

Replaces all occurrences of a specified regular expression pattern with a replacement string, starting at the first character in the input string.

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

Public Function Replace ( _
	input As String, _
	replacement As String _
) As String
Dim instance As Regex
Dim input As String
Dim replacement As String
Dim returnValue As String

returnValue = instance.Replace(input, replacement)
public String Replace (
	String input, 
	String replacement
public function Replace (
	input : String, 
	replacement : String
) : String



The string to modify.


The replacement string.

Return Value

The modified character string.

The following code example demonstrates the Regex.Replace method.

' This code example demonstrates the System.Text.Regular-
' Expressions.Regex.Replace(String, String) method.

Imports System
Imports System.Text.RegularExpressions

Class Sample
    Public Shared Sub Main() 
        ' Create a regular expression that matches a series of one 
        ' or more white spaces.
        Dim pattern As String = "\s+"
        Dim rgx As New Regex(pattern)
        ' Declare a string consisting of text and white spaces.
        Dim inputStr As String = "a   b   c   d"
        ' Replace runs of white space in the input string with a
        ' comma and a blank.
        Dim outputStr As String = rgx.Replace(inputStr, ", ")
        ' Display the resulting string.
        Console.WriteLine("Pattern:       ""{0}""", pattern)
        Console.WriteLine("Input string:  ""{0}""", inputStr)
        Console.WriteLine("Output string: ""{0}""", outputStr)
    End Sub 'Main
End Class 'Sample

'This code example produces the following results:
'Pattern:       "\s+"
'Input string:  "a   b   c   d"
'Output string: "a, b, c, d"

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.

.NET Framework

Supported in: 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 2.0, 1.0