[1.0/1.1] impersonation issue

Hi,

Code1 ---> c# web application

HTML Code:

---

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

}

---

Code2 ---> c# web application

HTML Code:

---

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

Show how you're doing and undoing the Impersonation.

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

Code:

---

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();       

                }
        }
}

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