BitArray

public sealed class BitArray : ICollection, IEnumerable, ICloneable
{
    // Constructors
    public BitArray (BitArray bits);  // An existing BitArray to copy 
    public BitArray (int length); // Capacity, in bits
    public BitArray (bool[] values); 
    public BitArray (byte[] bytes); 
    public BitArray (int[] values);
    public BitArray (int length, bool defaultValue);
    
    // To get/set value
    public bool this [int index] { get; set; }
    public bool Get  (int index);
    public void Set  (int index, bool value);
    public void SetAll (bool value);
    
    // Bitwise operators public BitArray Not();
    public BitArray And (BitArray value); 
    public BitArray Or  (BitArray value); 
    public BitArray Xor (BitArray value);
    
    // Copying
    public void CopyTo (Array array, int index);
    public object Clone();
    
    // Other
    public IEnumerator GetEnumerator(); 
    public int  Count { get; } 
    public int  Length  { get; set; } 
    public bool IsReadOnly  { get; } 
    public bool IsSynchronized { get; } 
    public object SyncRoot  { get; }
}

using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;

class Sample
{
    public static void Main()
    {
        var bits = new BitArray(2);
        bits[1] = true;
        bits.Xor(bits); // Bitwise exclusive-OR bits with itself
        Console.WriteLine(bits[1]); // False
    }

}