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

.NET Framework Class Library

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

Updated: March 2009

Returns a new string in which all occurrences of a specified Unicode character in this instance are replaced 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
)

Visual C++

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

JScript

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

Parameters

oldChar: Type: System..::.Char
A Unicode character to be replaced.

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

Return Value

Type: System..::.String
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.

Note:
This method does not modify the value of the current instance. Instead, it returns a new string in which all occurrences of oldChar are replaced by newChar.

Examples

The following 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"
//

Visual 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"
//

Platforms

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98, Windows CE, Windows Mobile for Smartphone, Windows Mobile for Pocket PC, Xbox 360, Zune

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

Version Information