IMPERSONATION : EXECUTER UN BOUT DE CODE AVEC LES DROITS D'UN AUTRE UTILISATEUR

[DllImport("advapi32.dll", SetLastError=true)]
public extern static bool LogonUser(String lpszUsername, String
lpszDomain,
String lpszPassword, int dwLogonType,
int dwLogonProvider, ref IntPtr phToken);



public void Impersonate()
{

	const int LOGON32_LOGON_INTERACTIVE = 2;
	const int LOGON32_LOGON_NETWORK = 3;
	
	const int LOGON32_PROVIDER_DEFAULT = 0;
	const int LOGON32_PROVIDER_WINNT35 = 1;
	const int LOGON32_PROVIDER_WINNT40 = 2;	
	const int LOGON32_PROVIDER_WINNT50 = 3;
	


	  IntPtr UserToken = new IntPtr(0);
	  bool loggedOn;

	  try
	  {
	  	//tente de logger l'utilisateur
		loggedOn = LogonUser(
		     "LOGIN",
		     "DOMAINE",//Dns.GetHostName(),
		      MOT DE PASSE",
		      LOGON32_LOGON_NETWORK,
		      LOGON32_PROVIDER_DEFAULT, 
		      ref UserToken);
	  }
	  catch(Exception ex)
	  {
		throw ex;
	  }

	  if(loggedOn) //logging ok ?
	  {
	  	//renvoi identité ASP_NET
		WindowsIdentity ident_here1 = WindowsIdentity.GetCurrent();
		
		
		WindowsIdentity SystemMonitorUser = new WindowsIdentity(UserToken);
		
		//Changement d'utilisateur ici
		WindowsImpersonationContext ImpersonatedUser =SystemMonitorUser.Impersonate();


		//ridentité nouvel User
		WindowsIdentity ident_here2 = WindowsIdentity.GetCurrent();


		/************************************************
		*
		*
		*		EXECUTER LE CODE ICI
		*
		*
		************************************************/
		

		ImpersonatedUser.Undo();
	  }
}