C# | Set all bits in the BitArray to the specified value Last Updated : 01 Feb, 2019 Comments Improve Suggest changes 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.SetAll(Boolean) method is used to set all bits in the BitArray to the specified value. 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 void SetAll (bool value); Here, value is the Boolean value to assign to all bits. Note: This method is an O(n) operation, where n is Count. Below programs illustrate the use of BitArray.SetAll(Boolean) method: Example 1: CSHARP // C# code to set all bits in the // BitArray to the specified value using System; using System.Collections; class GFG { // Driver code public static void Main() { // Creating a BitArray myBitArr // Initializing all the values to false BitArray myBitArr = new BitArray(5, false); // Printing the values in myBitArr // It should display all the bits as false Console.WriteLine("Initially the bits are as : "); PrintIndexAndValues(myBitArr); // Setting all bits to true myBitArr.SetAll(true); // Printing the values in myBitArr // It should display all the bits as true Console.WriteLine("Finally the bits are as : "); PrintIndexAndValues(myBitArr); } // Function to display bits public static void PrintIndexAndValues(IEnumerable myArr) { foreach(Object obj in myArr) { Console.WriteLine(obj); } } } Output: Initially the bits are as : False False False False False Finally the bits are as : True True True True True Example 2: CSHARP // C# code to set all bits in the // BitArray to the specified value using System; using System.Collections; class GFG { // Driver code public static void Main() { // Creating a BitArray myBitArr BitArray myBitArr = new BitArray(5); // Initializing all the bits in myBitArr myBitArr[0] = false; myBitArr[1] = true; myBitArr[2] = true; myBitArr[3] = false; myBitArr[4] = true; // Printing the values in myBitArr Console.WriteLine("Initially the bits are as : "); PrintIndexAndValues(myBitArr); // Setting all bits to false myBitArr.SetAll(false); // Printing the values in myBitArr // It should display all the bits as false Console.WriteLine("Finally the bits are as : "); PrintIndexAndValues(myBitArr); } // Function to display bits public static void PrintIndexAndValues(IEnumerable myArr) { foreach(Object obj in myArr) { Console.WriteLine(obj); } } } Output: Initially the bits are as : False True True False True Finally the bits are as : False False False False False Reference: https://docs.microsoft.com/en-us/dotnet/api/system.collections.bitarray.setall?view=netframework-4.7.2 Comment More infoAdvertise with us Next Article C# | Set all bits in the BitArray to the specified value S Sahil_Bansall Follow Improve Article Tags : C# CSharp-method CSharp-Collections-Namespace CSharp-Collections-BitArray Similar Reads C# | Set the bit at a specific position in the BitArray to the specified value 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. 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