Network C#

using System;
using System.Net;
using System.Net.Sockets;
using System.Text;
using System.Security.Permissions;
using System.Collections;
class MainClass
{
    public static void Main()
    {
        WebPermission myWebPermission1 = new WebPermission(PermissionState.None);
        myWebPermission1.AddPermission(NetworkAccess.Connect, "http://www.microsoft.com/default.htm");
        myWebPermission1.AddPermission(NetworkAccess.Connect, "http://www.msn.com");
        myWebPermission1.Demand();
        IEnumerator myEnum = myWebPermission1.ConnectList;
        while (myEnum.MoveNext())
        { Console.WriteLine("\tThe URI is : " + myEnum.Current); }
    }
}