StringBuilder.Append Method (array<Char>[]()[])

[ This article is for Windows Phone 8 developers. If you’re developing for Windows 10, see the latest documentation. ]

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

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


Public Function Append ( _
    value As Char() _
) As StringBuilder
public StringBuilder Append(
    char[] value


  • value
    Type: array<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.


Exception Condition

Enlarging the value of this instance would exceed its maximum capacity.


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 nullNothingnullptra null reference (Nothing in Visual Basic), 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)
outputBlock.Text += sb.ToString() + Environment.NewLine
' The example displays the following output:
'      The characters in the array: aeiou
char[] chars = { 'a', 'e', 'i', 'o', 'u' };
System.Text.StringBuilder sb = new System.Text.StringBuilder();
sb.Append("The characters in the array: ").Append(chars);
outputBlock.Text += sb + Environment.NewLine;
// The example displays the following output:
//      The characters in the array: aeiou

The capacity of this instance is adjusted as needed.

Version Information

Windows Phone OS

Supported in: 8.1, 8.0, 7.1, 7.0


Windows Phone

See Also


StringBuilder Class

Append Overload

System.Text Namespace