String.Replace Method (Char, Char) (System)

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.NET Framework Class Library

String.Replace Method (Char, Char)

Replaces all occurrences of a specified Unicode character in this instance with another specified Unicode character.

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

Syntax

Visual Basic (Declaration)

Public Function Replace ( _
	oldChar As Char, _
	newChar As Char _
) As String

Visual Basic (Usage)

Dim instance As String
Dim oldChar As Char
Dim newChar As Char
Dim returnValue As String

returnValue = instance.Replace(oldChar, newChar)

public string Replace (
	char oldChar,
	char newChar
)

C++

public:
String^ Replace (
	wchar_t oldChar, 
	wchar_t newChar
)

public String Replace (
	char oldChar, 
	char newChar
)

JScript

public function Replace (
	oldChar : char, 
	newChar : char
) : String

Parameters

oldChar: A Unicode character to be replaced.

newChar: A Unicode character to replace all occurrences of oldChar.

Return Value

A String equivalent to this instance but with all instances of oldChar replaced with newChar.

Remarks

This method performs an ordinal (case-sensitive and culture-insensitive) search to find oldChar.

Example

The following code example creates a comma separated value list by substituting commas for the blanks between a series of numbers.

Visual Basic

Imports System
 _

Class stringReplace1
   Public Shared Sub Main()
      Dim str As [String] = "1 2 3 4 5 6 7 8 9"
      Console.WriteLine("Original string: ""{0}""", str)
      Console.WriteLine("CSV string:      ""{0}""", str.Replace(" "c, ","c))
   End Sub
End Class
'
' This example produces the following output:
' Original string: "1 2 3 4 5 6 7 8 9"
' CSV string:      "1,2,3,4,5,6,7,8,9"
'

using System;

class stringReplace1 {
    public static void Main() {
        String str = "1 2 3 4 5 6 7 8 9";
        Console.WriteLine("Original string: \"{0}\"", str);
        Console.WriteLine("CSV string:      \"{0}\"", str.Replace(' ', ','));
    }
}
//
// This example produces the following output:
// Original string: "1 2 3 4 5 6 7 8 9"
// CSV string:      "1,2,3,4,5,6,7,8,9"
//

C++

using namespace System;
int main()
{
   String^ str = "1 2 3 4 5 6 7 8 9";
   Console::WriteLine( "Original string: \"{0}\"", str );
   Console::WriteLine( "CSV string:      \"{0}\"", str->Replace( ' ', ',' ) );
}

//
// This example produces the following output:
// Original string: "1 2 3 4 5 6 7 8 9"
// CSV string:      "1,2,3,4,5,6,7,8,9"
//

import System.*;

class StringReplace1
{
    public static void main(String[] args)
    {
        String str = "1 2 3 4 5 6 7 8 9";
        Console.WriteLine("Original string: \"{0}\"", str);
        Console.WriteLine("CSV string:      \"{0}\"", str.Replace(' ', ','));
    } //main
} //StringReplace1
//
// This example produces the following output:
// Original string: "1 2 3 4 5 6 7 8 9"
// CSV string:      "1,2,3,4,5,6,7,8,9"
//

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

Reference

String Class
String Members
System Namespace
Char Structure
Concat
Insert
Join
Remove
Split
Substring
Trim

Community Content

Thomas Lee

Sample Recoded in PowerShell

<#
.SYNOPSIS
    This script implements an MSDN sample in PowerShell
.DESCRIPTION
    This script uses the String Replace method to replace
    all occurances of one char in a string to another. 
.NOTES
    File Name  : Replace-String2.ps1
 Author     : Thomas Lee - tfl@psp.co.uk
 Requires   : PowerShell Version 2.0
.LINK
    This script posted to:
http://www.pshscripts.blogspot.com
    MSDN Sample posted at:
http://msdn.microsoft.com/en-us/library/czx8s9ts%28VS.80%29.aspx
.EXAMPLE
    PSH [C:\foo]: .\Replace-String2.ps1'
    Original string: "1 2 3 4 5 6 7 8 9"
    CSV string:      "1,2,3,4,5,6,7,8,9"
#>

# Create string
$Str = "1 2 3 4 5 6 7 8 9"

# Display Original String
"Original string: `"{0}`"" -f $Str

# Display new string, replacing " " with ","
"CSV string:      `"{0}`"" -f $Str.Replace(' ', ',')
# End of script