C# | Number of elements contained in the BitArray Last Updated : 11 Jul, 2025 Summarize Comments Improve Suggest changes Share Like Article Like Report The BitArray class manages a compact array of bit values, which are represented as Booleans, where true indicates that the bit is on i.e, 1 and false indicates the bit is off i.e, 0. This class is contained in System.Collections namespace. BitArray.Count property is used to get the number of elements contained in the BitArray. Properties: The BitArray class is a collection class in which the capacity is always the same as the count. Elements are added to a BitArray by increasing the Length property. Elements are deleted by decreasing the Length property. Elements in this collection can be accessed using an integer index. Indexes in this collection are zero-based. Syntax: public int Count { get; } Below programs illustrate the use of BitArray.Count Property: Example 1: CSHARP // C# code to get the number of // elements contained in the BitArray using System; using System.Collections; class GFG { // Driver code public static void Main() { // Creating a BitArray BitArray myBitArr = new BitArray(new byte[] { 0, 1, 0, 1 }); // To get the number of elements // contained in the BitArray Console.WriteLine(myBitArr.Count); } } Output: 32 Example 2: CSHARP // C# code to get the number of // elements contained in the BitArray using System; using System.Collections; class GFG { // Driver code public static void Main() { // Creating a BitArray BitArray myBitArr = new BitArray(new byte[] { 0 }); // To get the number of elements // contained in the BitArray Console.WriteLine(myBitArr.Count); } } Output: 8 Note: Length and Count return the same value. Length can be set to a specific value, but Count is read-only. Retrieving the value of this property is an O(1) operation. Reference: https://learn.microsoft.com/en-us/dotnet/api/system.collections.bitarray.count?view=netframework-4.7.2 Comment More infoAdvertise with us Next Article C# | Bitwise OR operation between the elements of BitArray S Sahil_Bansall Follow Improve Article Tags : C# CSharp-Collections-Namespace CSharp-Collections-BitArray Similar Reads C# | Get or set the number of elements in the BitArray The BitArray class manages a compact array of bit values, which are represented as Booleans, where true indicates that the bit is on i.e, 1 and false indicates the bit is off i.e, 0. This class is contained in System.Collections namespace. BitArray.Length property is used to get or set the number of 2 min read C# | Bitwise OR operation between the elements of BitArray The BitArray class manages a compact array of bit values, which are represented as Booleans, where true indicates that the bit is on i.e, 1 and false indicates the bit is off i.e, 0. This class is contained in System.Collections namespace. BitArray.Or(BitArray) method is used to perform the bitwise 3 min read C# | Bitwise AND between the elements of BitArray The BitArray class manages a compact array of bit values, which are represented as Booleans, where true indicates that the bit is on i.e, 1 and false indicates the bit is off i.e, 0. This class is contained in System.Collections namespace. BitArray.And(BitArray) method is used to perform the bitwise 3 min read C# | Copying BitArray elements to an Array The BitArray class manages a compact array of bit values, which are represented as Booleans, where true indicates that the bit is on i.e, 1 and false indicates the bit is off i.e, 0. This class is contained in System.Collections namespace. BitArray.CopyTo(Array, Int32) method is used to copy the ent 3 min read C# | Bitwise exclusive OR operation between the elements of BitArray The BitArray class manages a compact array of bit values, which are represented as Booleans, where true indicates that the bit is on i.e, 1 and false indicates the bit is off i.e, 0. This class is contained in System.Collections namespace. BitArray.Xor(BitArray) method is used to perform the bitwise 3 min read C# | Enumerator that iterates through the BitArray The BitArray class manages a compact array of bit values, which are represented as Booleans, where true indicates that the bit is on i.e, 1 and false indicates the bit is off i.e, 0. This class is contained in System.Collections namespace. BitArray.GetEnumerator method is used to get an enumerator w 3 min read Like