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StringBuilder.Append Method (Char, Int32)

Appends a specified number of copies of the string representation of a Unicode character to this instance.

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

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

Parameters

value
Type: System.Char

The character to append.

repeatCount
Type: System.Int32

The number of times to append value.

Return Value

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

ExceptionCondition
ArgumentOutOfRangeException

repeatCount is less than zero.

-or-

Enlarging the value of this instance would exceed MaxCapacity.

OutOfMemoryException

Out of memory.

The Append(Char, Int32) 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 value As Decimal = 1346.19d
Dim sb As New System.Text.StringBuilder()
sb.Append("*"c, 5).AppendFormat("{0:C2}", value).Append("*"c, 5)
Console.WriteLine(sb)
' The example displays the following output: 
'       *****$1,346.19*****

The capacity of this instance is adjusted as needed.

Notes to Callers

In the .NET Framework 4 and the .NET Framework 4.5, when you instantiate the StringBuilder object by calling the StringBuilder(Int32, Int32) 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: 4.5, 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

.NET for Windows Store apps

Supported in: Windows 8

.NET for Windows Phone apps

Supported in: Windows Phone 8.1, Windows Phone Silverlight 8.1, Windows Phone Silverlight 8

Windows Phone 8.1, Windows Phone 8, Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

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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