Imperative security demands : PermissionSet : Security C# Examples

    
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();
        }
}