Call By References

 class PassingRefByRef

    {

        static void Change(ref int[] pArray)

        {

            // Both of the following changes will affect the original variables:

            pArray[0] = 888;

            pArray = new int[5] { -3, -1, -2, -3, -4 };

            System.Console.WriteLine("Inside the method, the first element is: {0}", pArray[0]);

            Console.ReadLine();

        }

        static void Main()

        {

            int[] array = { 2, 3, 6, 7 };

            System.Console.WriteLine("The No Before Calling the ,The first element is{0}", array[0]);

            int[] arr = { 1, 4, 5 };

            System.Console.WriteLine("Inside Main, before calling the method, the first element is: {0}", arr[0]);

           Change(ref arr);

            System.Console.WriteLine("Inside Main, after calling the method, the first element is: {0}", arr[0]);

            Console.ReadLine();

        }

    }