[1.0/1.1] impersonation issue

[popskie]

Hi,

Code1 ---> c# web application

class class1
{
Impersonation;
//code here
undo Impersonation;
class 2 
{
Impersonation;
//code here
undo Impersonation;       
}

}

Code2 ---> c# web application

class class1
{
Impersonation;
//code here
class 2 
{
//code here
}

//undo Impersonation;       

}

Code 1 and code 2 working properly. the only issue I found in code 1 is very slow during exection.
My question in code 2 is it ok , not to undo the impersonation? Is there no problem in memory? If I uncomment the undo impersonation in code 2. there is an error occor. It say it cannot complete the operation.

Pls give me an input.

thanks,

Popkie

[mendhak]

Show how you're doing and undoing the Impersonation.

[popskie]

hi hackmend,

this is the method i used to call inside my class.

impersonate.Logoonimpersonate(); // impersonation method
impersonate.Logoffimpersonate(); // undo impersonation

belows is the impersonation class

using System;
using System.Runtime.InteropServices;

namespace WebPartControls
{
	/// <summary>
	/// Summary description for impersonate.
	/// </summary>
	public class impersonate
	{
		const int LOGON32_LOGON_INTERACTIVE       = 2;
		const int LOGON32_LOGON_NETWORK           = 3;
		const int LOGON32_LOGON_BATCH             = 4;
		const int LOGON32_LOGON_SERVICE           = 5;
		const int LOGON32_LOGON_UNLOCK            = 7;
		const int LOGON32_LOGON_NETWORK_CLEARTEXT = 8;
		const int LOGON32_LOGON_NEW_CREDENTIALS   = 9;
		const int LOGON32_PROVIDER_DEFAULT        = 0;
		static IntPtr lnToken;

		[DllImport("advapi32.dll", SetLastError=true)]
		public static extern int LogonUser(
			string lpszUsername, 
			string lpszDomain, 
			string lpszPassword, 
			int dwLogonType, 
			int dwLogonProvider, 
			out IntPtr phToken
			);
		[DllImport("advapi32.dll", SetLastError=true)]
		public static extern int ImpersonateLoggedOnUser(
			IntPtr hToken
			);

		[DllImport("advapi32.dll", SetLastError=true)]
		static extern int RevertToSelf();

		[DllImport("kernel32.dll", SetLastError=true)]
		static extern int CloseHandle(IntPtr hObject);
		public static void Logoonimpersonate()
		{
			IntPtr lnToken;
			int TResult = LogonUser("username","domain","password",  LOGON32_LOGON_NETWORK,
				          LOGON32_PROVIDER_DEFAULT,
				          out lnToken);
            ImpersonateLoggedOnUser(lnToken);			

		}
		public impersonate(string userid,string domain,string password)
		{
			
			int TResult = LogonUser(userid,domain,password,
				LOGON32_LOGON_NETWORK,
				LOGON32_PROVIDER_DEFAULT,
				out lnToken);
			ImpersonateLoggedOnUser(lnToken);			

		}
		public static void Logoffimpersonate()
		{
			RevertToSelf();	

		}
	}
}