StringBuilder Constructor (String, Int32)

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

Initializes a new instance of the StringBuilder class using the specified string and capacity.

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


Public Sub New ( _
    value As String, _
    capacity As Integer _
public StringBuilder(
    string value,
    int capacity


  • value
    Type: System..::.String
    The string used to initialize the value of the instance. If value is nullNothingnullptra null reference (Nothing in Visual Basic), the new StringBuilder will contain the empty string (that is, it contains Empty).


Exception Condition

capacity is less than zero.


If capacity is zero, the implementation-specific default capacity is used.


The following code example demonstrates how to call the StringBuilder constructor with an initial string and a specified capacity.

Dim initialString As String = "Initial string. "
Dim capacity As Integer = 255
Dim stringBuilder As New StringBuilder(initialString, capacity)
string initialString = "Initial string. ";
int capacity = 255;
StringBuilder stringBuilder =
    new StringBuilder(initialString, capacity);

Version Information

Windows Phone OS

Supported in: 8.1, 8.0, 7.1, 7.0


Windows Phone

See Also


StringBuilder Class

StringBuilder Overload

System.Text Namespace