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BitArray.Set Method

Sets the bit at a specific position in the BitArray to the specified value.

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

'Declaration
Public Sub Set ( _
	index As Integer, _
	value As Boolean _
)
'Usage
Dim instance As BitArray
Dim index As Integer
Dim value As Boolean

instance.Set(index, value)
public void Set (
	int index, 
	boolean value
)
public function Set (
	index : int, 
	value : boolean
)
Not applicable.

Parameters

index

The zero-based index of the bit to set.

value

The Boolean value to assign to the bit.

Exception typeCondition

ArgumentOutOfRangeException

index is less than zero.

-or-

index is greater than or equal to the number of elements in the BitArray.

This method is an O(1) operation.

The following code example shows how to set and get specific elements in a BitArray.

Imports System
Imports System.Collections
Imports Microsoft.VisualBasic

Public Class SamplesBitArray    
    
    Public Shared Sub Main()
        
        ' Creates and initializes a BitArray.
        Dim myBA As New BitArray(5)
        
        ' Displays the properties and values of the BitArray.
        Console.WriteLine("myBA values:")
        PrintIndexAndValues(myBA)
        
        ' Sets all the elements to true.
        myBA.SetAll(True)
        
        ' Displays the properties and values of the BitArray.
        Console.WriteLine("After setting all elements to true,")
        PrintIndexAndValues(myBA)
        
        ' Sets the last index to false.
        myBA.Set(myBA.Count - 1, False)
        
        ' Displays the properties and values of the BitArray.
        Console.WriteLine("After setting the last element to false,")
        PrintIndexAndValues(myBA)
        
        ' Gets the value of the last two elements.
        Console.WriteLine("The last two elements are: ")
        Console.WriteLine("    at index {0} : {1}", _
           myBA.Count - 2, myBA.Get(myBA.Count - 2))
        Console.WriteLine("    at index {0} : {1}", _
           myBA.Count - 1, myBA.Get(myBA.Count - 1))
    End Sub 'Main

    Public Shared Sub PrintIndexAndValues(myCol As IEnumerable)
        Dim i As Integer
        Dim obj As Object
        i = 0
        For Each obj In  myCol
            Console.WriteLine("    [{0}]:    {1}", i, obj)
            i = i + 1
        Next obj
        Console.WriteLine()
    End Sub 'PrintValues

End Class

' This code produces the following output.
' 
' myBA values:
'     [0]:    False
'     [1]:    False
'     [2]:    False
'     [3]:    False
'     [4]:    False
' 
' After setting all elements to true,
'     [0]:    True
'     [1]:    True
'     [2]:    True
'     [3]:    True
'     [4]:    True
' 
' After setting the last element to false,
'     [0]:    True
'     [1]:    True
'     [2]:    True
'     [3]:    True
'     [4]:    False
' 
' The last two elements are:
'     at index 3 : True
'     at index 4 : False


import System.*;
import System.Collections.*;

public class SamplesBitArray
{
    public static void main(String[] args)
    {
        // Creates and initializes a BitArray.
        BitArray myBA = new BitArray(5);
        // Displays the properties and values of the BitArray.
        Console.WriteLine("myBA values:");
        PrintIndexAndValues(myBA);

        // Sets all the elements to true.
        myBA.SetAll(true);

        // Displays the properties and values of the BitArray.
        Console.WriteLine("After setting all elements to true,");
        PrintIndexAndValues(myBA);

        // Sets the last index to false.
        myBA.Set(myBA.get_Count() - 1, false);

        // Displays the properties and values of the BitArray.
        Console.WriteLine("After setting the last element to false,");
        PrintIndexAndValues(myBA);

        // Gets the value of the last two elements.
        Console.WriteLine("The last two elements are: ");
        Console.WriteLine("    at index {0} : {1}", 
            System.Convert.ToString(myBA.get_Count() - 2), 
            System.Convert.ToString(myBA.Get((myBA.get_Count() - 2))));
        Console.WriteLine("    at index {0} : {1}", 
            System.Convert.ToString(myBA.get_Count() - 1), 
            System.Convert.ToString(myBA.Get((myBA.get_Count() - 1))));
    } //main

    public static void PrintIndexAndValues(IEnumerable myCol)
    {
        int i = 0;
        IEnumerator objMyEnum = myCol.GetEnumerator();
        while (objMyEnum.MoveNext()) {
            Object obj = objMyEnum.get_Current();
            Console.WriteLine("    [{0}]:    {1}", (Int32)i++, obj);
        }
        Console.WriteLine();
    } //PrintIndexAndValues
} //SamplesBitArray 
/* 
 This code produces the following output.
 
 myBA values:
     [0]:    False
     [1]:    False
     [2]:    False
     [3]:    False
     [4]:    False

 After setting all elements to true,
     [0]:    True
     [1]:    True
     [2]:    True
     [3]:    True
     [4]:    True

 After setting the last element to false,
     [0]:    True
     [1]:    True
     [2]:    True
     [3]:    True
     [4]:    False

 The last two elements are:
     at index 3 : True
     at index 4 : False

 */

Windows 98, Windows Server 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 2.0, 1.0

XNA Framework

Supported in: 1.0
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