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BitArray.Not Method

Inverts all the bit values in the current BitArray, so that elements set to true are changed to false, and elements set to false are changed to true.

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

Public Function Not As BitArray

Return Value

Type: System.Collections.BitArray
The current instance with inverted bit values.

This method is an O(n) operation, where n is Count.

The following code example shows how to apply NOT to a BitArray.

Imports System
Imports System.Collections
Imports Microsoft.VisualBasic

Public Class SamplesBitArray    

    Public Shared Sub Main()

        ' Creates and initializes two BitArrays of the same size. 
        Dim myBA1 As New BitArray(4)
        Dim myBA2 As New BitArray(4)
        myBA1(0) = False
        myBA1(1) = False
        myBA1(2) = True
        myBA1(3) = True
        myBA2(0) = False
        myBA2(2) = False
        myBA2(1) = True
        myBA2(3) = True 

        ' Performs a bitwise NOT operation between BitArray instances of the same size.
        Console.WriteLine("Initial values")
        PrintValues(myBA1, 8)
        PrintValues(myBA2, 8)


        Console.WriteLine("After NOT")
        PrintValues(myBA1, 8)
        PrintValues(myBA2, 8)
    End Sub     

    Public Shared Sub PrintValues(myList As IEnumerable, myWidth As Integer)
        Dim i As Integer = myWidth
        Dim obj As [Object]
        For Each obj In  myList
            If i <= 0 Then
                i = myWidth
            End If
            i -= 1
            Console.Write("{0,8}", obj)
        Next obj
    End Sub 'PrintValues

End Class 

' This code produces the following output. 
' Initial values 
' myBA1:    False    False    True    True 
' myBA2:    False    True    False    True 
' After NOT 
' myBA1:    True    True    False    False 
' myBA2:    True    False    True    False 

.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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