This documentation is archived and is not being maintained.

StringBuilder.Replace Method (String, String)

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

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

public function Replace(
	oldValue : String, 
	newValue : String
) : StringBuilder


Type: System.String

The string to replace.

Type: System.String

The string that replaces oldValue, or a null reference (Nothing in Visual Basic).

Return Value

Type: System.Text.StringBuilder
A reference to this instance with all instances of oldValue replaced by newValue.


oldValue is a null reference (Nothing in Visual Basic).


The length of oldvalue is zero.


Enlarging the value of this instance would exceed MaxCapacity.

The strings to replace are checked on an ordinal basis; that is, the replacement is not culture-aware. If newValue is a null reference (Nothing in Visual Basic), all occurrences of oldValue are removed. This method is case-sensitive.

The following example demonstrates the Replace method.

No code example is currently available or this language may not be supported.

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