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StringBuilder.Clear Method

Removes all characters from the current StringBuilder instance.

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

'Declaration
Public Function Clear As StringBuilder

Return Value

Type: System.Text.StringBuilder
An object whose Length is 0 (zero).

Clear is a convenience method that is equivalent to setting the Length property of the current instance to 0 (zero).

Calling the Clear method does not modify the current instance's Capacity or MaxCapacity property.

The following example instantiates a StringBuilder object with a string, calls the Clear method, and then appends a new string.

Imports System.Text

Module Example
   Public Sub Main()
      Dim sb As New StringBuilder("This is a string.")
      Console.WriteLine("{0} ({1} characters)", sb.ToString(), sb.Length)

      sb.Clear()
      Console.WriteLine("{0} ({1} characters)", sb.ToString(), sb.Length)

      sb.Append("This is a second string.")
      Console.WriteLine("{0} ({1} characters)", sb.ToString(), sb.Length)
   End Sub             
End Module 
' The example displays the following output: 
'       This is a string. (17 characters) 
'        (0 characters) 
'       This is a second string. (24 characters)

.NET Framework

Supported in: 4.5, 4

.NET Framework Client Profile

Supported in: 4

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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