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String.Replace Method (Char, Char)

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
The Unicode character to be replaced.
newChar
Type: System.Char
The Unicode character to replace all occurrences of oldChar.

Return Value

Type: System.String
A string that is equivalent to this instance except that all instances of oldChar are 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"
//


.NET Framework

Supported in: 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Portable Class Library

Supported in: Portable Class Library

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

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

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