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StringBuilder.Append Method (Char())

Appends the string representation of the Unicode characters in a specified array to this instance.

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

'Declaration
Public Function Append ( _
	value As Char() _
) As StringBuilder

Parameters

value
Type: System.Char()
The array of characters to append.

Return Value

Type: System.Text.StringBuilder
A reference to this instance after the append operation has completed.

ExceptionCondition
ArgumentOutOfRangeException

Enlarging the value of this instance would exceed MaxCapacity.

This method appends all the characters in the specified array to the current instance in the same order as they appear in value. If value is Nothing, no changes are made.

The Append method modifies the existing instance of this class; it does not return a new class instance. Because of this, you can call a method or property on the existing reference and you do not have to assign the return value to a StringBuilder object, as the following example illustrates.


Dim chars() As Char = { "a"c, "e"c, "i"c, "o"c, "u"c }
Dim sb As New System.Text.StringBuilder()
sb.Append("The characters in the array: ").Append(chars)
Console.WriteLine(sb)
' The example displays the following output:
'      The characters in the array: aeiou


The capacity of this instance is adjusted as needed.

Notes to Callers

In the .NET Framework 4, when you instantiate the StringBuilder object by calling the StringBuilder constructor, both the length and the capacity of the StringBuilder instance can grow beyond the value of its MaxCapacity property. This can occur particularly when you call the Append and AppendFormat methods to append small strings.

.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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