What is the BitArray class in C#?

The BitArray class is used when you need to store the bits but do not know the number of bits in advance.

The following are some of the properties of the BitArray class in C# −

Sr.No.Property & Description
Gets the number of elements contained in the BitArray.
Gets a value indicating whether the BitArray is read-only.
Gets or sets the value of the bit at a specific position in the BitArray.
Gets or sets the number of elements in the BitArray.

Let us see how to work with IsReadOnly property in C#.

With IsReadOnly class, you can get a value indicating whether the BitArray is read-only or not. ReadOnly will not allow you to add new elements to the BitArray.

The following is our example stating how to use the IsReadOnly property of BitArray class in C# −


using System;
using System.Collections;

namespace Demo {
   class Program {
      static void Main(string[] args) {

         BitArray ba1 = new BitArray(5);
         BitArray ba2 = new BitArray(5);

         byte[] a = { 90 };
         byte[] b = { 30 };

         ba1 = new BitArray(a);
         ba2 = new BitArray(b);

         Console.WriteLine("Bit array ba1: 60");

         for (int i = 0; i < ba1.Count; i++) {
            Console.Write("{0, -4} ", ba1[i]);

         Console.WriteLine("IsReadOnly = " + ba1.IsReadOnly);
         Console.WriteLine("IsReadOnly = " + ba2.IsReadOnly);