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BitArray.And Method

Performs the bitwise AND operation on the elements in the current BitArray against the corresponding elements in the specified BitArray.

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

'Declaration
Public Function And ( _
	value As BitArray _
) As BitArray

Parameters

value
Type: System.Collections.BitArray

The BitArray with which to perform the bitwise AND operation.

Return Value

Type: System.Collections.BitArray
The current instance containing the result of the bitwise AND operation on the elements in the current BitArray against the corresponding elements in the specified BitArray.

ExceptionCondition
ArgumentNullException

value is Nothing.

ArgumentException

value and the current BitArray do not have the same number of elements.

The bitwise AND operation returns true if both operands are true, and returns false if one or both operands are false.

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

The following code example shows how to apply AND to two BitArray instances.

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(1) = False
        myBA1(0) = False
        myBA1(3) = True
        myBA1(2) = True
        myBA2(2) = False
        myBA2(0) = False
        myBA2(3) = True
        myBA2(1) = True 

        ' Performs a bitwise AND operation between BitArray instances of the same size.
        Console.WriteLine("Initial values")
        Console.Write("myBA1:")
        PrintValues(myBA1, 8)
        Console.Write("myBA2:")
        PrintValues(myBA2, 8)
        Console.WriteLine()

        Console.WriteLine("Result")
        Console.Write("AND:")
        PrintValues(myBA1.And(myBA2), 8)
        Console.WriteLine()

        Console.WriteLine("After AND")
        Console.Write("myBA1:")
        PrintValues(myBA1, 8)
        Console.Write("myBA2:")
        PrintValues(myBA2, 8)
        Console.WriteLine()

        ' Performing AND between BitArray instances of different sizes returns an exception. 
        Try 
            Dim myBA3 As New BitArray(8)
            myBA3(0) = False
            myBA3(1) = False
            myBA3(2) = False
            myBA3(3) = False
            myBA3(4) = True
            myBA3(5) = True
            myBA3(6) = True
            myBA3(7) = True
            myBA1.And(myBA3)
        Catch myException As Exception
            Console.WriteLine("Exception: " + myException.ToString())
        End Try 
    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
                Console.WriteLine()
            End If
            i -= 1
            Console.Write("{0,8}", obj)
        Next obj
        Console.WriteLine()
    End Sub 'PrintValues

End Class 


' This code produces the following output. 
'  
' Initial values 
' myBA1:   False   False    True    True 
' myBA2:   False    True   False    True 

' Result 
' AND:   False   False   False    True 

' After AND 
' myBA1:   False   False   False    True 
' myBA2:   False    True   False    True 

' Exception: System.ArgumentException: Array lengths must be the same. 
'    at System.Collections.BitArray.And(BitArray value) 
'    at SamplesBitArray.Main()

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0, 1.1

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

XNA Framework

Supported in: 3.0, 2.0, 1.0

Portable Class Library

Supported in: Portable Class Library

Supported in: Windows Phone 8.1

Supported in: Windows Phone Silverlight 8.1

Supported in: Windows Phone Silverlight 8
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