Program:

The source code to set all bits in the BitArray to the specified value is given below. The given program is compiled and executed successfully.

using System;
using System.Collections;

class BitArrayEx
{
    //Entry point of Program
    static public void Main()
    {
        //Creation of BitArray objects
        BitArray bitArr = new BitArray(5);
        
        int index = 0;

        bitArr[0] = true;
        bitArr[1] = false;
        bitArr[2] = true;
        bitArr[3] = false;
        bitArr[4] = true;

        bitArr.SetAll(true);

        Console.WriteLine("Elements of BitArray after setting true:");
        for (index = 0; index < bitArr.Length; index++)
        {
            Console.WriteLine("\tIndex "+index + ": "+bitArr.Get(index));
        }

        bitArr.SetAll(false);

        Console.WriteLine("Elements of BitArray  after setting false:");
        for (index = 0; index < bitArr.Length; index++)
        {
            Console.WriteLine("\tIndex " + index + ": " + bitArr.Get(index));
        }

    }
}

Output:

Elements of BitArray after setting true:
        Index 0: True
        Index 1: True
        Index 2: True
        Index 3: True
        Index 4: True
Elements of BitArray  after setting false:
        Index 0: False
        Index 1: False
        Index 2: False
        Index 3: False
        Index 4: False
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