using System;
using System.Collections.Generic;
using System.Text;
using System.Security;
using System.Security.Permissions;
class PermissionFich {
static void Main(string[] args)
{
CodeAccessPermission permissionA = new FileIOPermission(FileIOPermissionAccess.AllAccess, "f:");
CodeAccessPermission permissionB = new FileIOPermission(FileIOPermissionAccess.Read, @"f:test");
}
}