Imperative security demands : PermissionSet « Security « C# / CSharp Tutorial

1. C# / CSharp Tutorial
2. Security
3. PermissionSet

using System;
using System.Collections.Generic;
using System.IO;
using System.IO.IsolatedStorage;
using System.Net;
using System.Net.Sockets;
using System.Reflection;
using System.Security;
using System.Security.AccessControl;
using System.Security.Policy;
using System.Security.Permissions;
using System.Security.Principal;
using System.Text;

public class MainClass
{
    public static void Main()
    {
        AppDomain sandboxAd;
        Evidence ev = new Evidence();
        ev.AddAssembly(Assembly.GetExecutingAssembly());
        PermissionSet permSet = new PermissionSet(PermissionState.None);
        permSet.AddPermission(new SecurityPermission(PermissionState.Unrestricted));
        permSet.AddPermission(new FileIOPermission(PermissionState.Unrestricted));
        sandboxAd = AppDomain.CreateDomain("Sandbox", ev, new AppDomainSetup(), permSet);

        sandboxAd.DoCallBack(SecureOperationImperative);
    }
    private static void SecureOperationImperative()
    {
        FileIOPermission p = new FileIOPermission(FileIOPermissionAccess.Read, @"C:\");
        p.Demand();
    }
}