using System;

​

public class Program

{

    public static void TestForEach(ref int[] myArray)

    {

        foreach (int x in myArray)

        {

            Console.WriteLine(x);

        }

    }

​

    public static void TestForWithLength(ref Object[] myArray)

    {

        for (int x = 0; x < myArray.Length; x++)

        {

            Console.WriteLine(myArray[x]);

        }

    }

​

    public static void TestForEnum(ref System.Array myArray)

    {

        System.Collections.IEnumerator myEnumerator = myArray.GetEnumerator();

        int i = 0;

        int cols = myArray.GetLength(myArray.Rank - 1);

        while (myEnumerator.MoveNext())

        {

            if (i < cols)

            {

                i++;

            }

            else

            {

                Console.WriteLine();

                i = 1;

            }

​

            Console.WriteLine(myEnumerator.Current);

        }

    }

​

    public static void Main()

    {

        // an int array and an Object array

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

        TestForEach(ref myIntArray);

        // an Object array

        Object[] myObjArray = new Object[5]{99, 98, 97, 96, 95};

        TestForWithLength(ref myObjArray);

        // another object array

        Array myObjArray2 = Array.CreateInstance(Type.GetType("System.Object"), 5);

        for (int i = myObjArray2.GetLowerBound(0); i <= myObjArray2.GetUpperBound(0); i++)

            myObjArray2.SetValue(i * i, i);

        TestForEnum(ref myObjArray2);

    }

}