using System;

using System.Collections.Generic;

public class Program

{

    public static void Main()

    {

        int[] arr = { 0, 1, 2, 3, 4 };

        List<int> list = new List<int>();

​

        for (int x = 5; x < 10; x++)

        {

            list.Add(x);

        }

​

        ProcessItems<int>(arr);

        ProcessItems<int>(list);

    }

    static void ProcessItems<T>(IList<T> coll)

    {

        // IsReadOnly returns True for the array and False for the List.

        System.Console.WriteLine

            ("IsReadOnly returns {0} for this collection.",

            coll.IsReadOnly);

​

        // The following statement causes a run-time exception for the 

        // array, but not for the List.

        //coll.RemoveAt(3);

​

        foreach (T item in coll)

        {

            System.Console.Write(item.ToString() + " ");

        }

        System.Console.WriteLine();

    }

}