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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)

public string Replace(
	char oldChar,
	char newChar
)

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.

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

NoteNote:

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.

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

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" 
//

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.

.NET Framework

Supported in: 3.5, 3.0, 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 3.5, 2.0, 1.0

XNA Framework

Supported in: 3.0, 2.0, 1.0

Date

History

Reason

March 2009

Modified the member description.

Customer feedback.

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