Remove all elements from the Collection in CSharp

using System;/*  ww  w  .j av  a2  s .  co m*/
using System.Collections.Generic;
using System.Collections.ObjectModel;

public class Demo
{
    public static void Main()
    {
        Collection<string> myData = new Collection<string>();

        myData.Add("A");
        myData.Add("B");
        myData.Add("C");
        myData.Add("D");

        Console.WriteLine(myData.Count);
        myData.Clear();
        Console.WriteLine(myData.Count);
    }
}