Here is a sample that shows how I've written my code. To run it you pass the start search path, the user ID and the password. For example:
ActiveDirectoryTimeout "LDAP://192.168.0.156/dc=Sandy,dc=home,dc=com" Administrator password
using System;
using System.Collections;
using System.DirectoryServices;
using System.Text;
namespace ActiveDirectoryTimeout
{
class Program
{
static void Main(string[] args)
{
if (args.Length < 3)
Console.WriteLine("Usage is: ActiveDirectoryTimeout <LDAP start path> <userId> <password>");
Program pgm = new Program();
pgm.ImportUsersFromLDAP(args[0] as string, args[1] as string, args[2] as string);
}
public void ImportUsersFromLDAP(string strLDAPPath, string strUserId, string strPwd)
{
ArrayList alAttributesToLoad = new ArrayList();
int nCount = 0;
ResultPropertyValueCollection col = null;
string strItemPath = "";
string strFilter = "(&(objectClass=user)(objectCategory=Person)(!userAccountControl:1.2.840.113556.1.4.803:=2)(EmployeeID=*))";
int nMaxPageSize = 1000;
int nPageTimeLimitInSecs = 120; //max we can set since MaxQueryDuration will kick in at 120 seconds
try
{
//Add attributes to load from User object
alAttributesToLoad.Add("department");
alAttributesToLoad.Add("distinquishedName");
alAttributesToLoad.Add("employeeID");
alAttributesToLoad.Add("givenName");
alAttributesToLoad.Add("mail");
alAttributesToLoad.Add("manager");
alAttributesToLoad.Add("middleName");
alAttributesToLoad.Add("mobile");
alAttributesToLoad.Add("name");
alAttributesToLoad.Add("physicalDeliveryOfficeName");
alAttributesToLoad.Add("sn");
alAttributesToLoad.Add("telephoneNumber");
alAttributesToLoad.Add("adspath");
using (DirectoryEntry dirEntry = CreateDirectoryEntry(strLDAPPath, strUserId, strPwd))
{
Console.WriteLine("DirectoryEntry created");
using (DirectorySearcher dirSearcher = CreateSearcher(dirEntry, false))
{
Console.WriteLine("DirectorySearcher created");
using (SearchResultCollection colResults = GetObjectsWithFilter(dirSearcher, strFilter, alAttributesToLoad, nMaxPageSize, nPageTimeLimitInSecs))
{
foreach (SearchResult result in colResults)
{
col = result.Properties["adspath"];
if ((col != null) && (col.Count > 0))
{
strItemPath = col[0] as string;
}
nCount++;
//I do a bunch of stuff here to create objects in my system using the info from each LDAP object
System.Threading.Thread.Sleep(6000);
}
}
Console.WriteLine("");
Console.WriteLine("Done with import");
}
}
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
}
Console.WriteLine(nCount.ToString() + " items imported.");
Console.WriteLine("Press any key to continue.");
Console.ReadLine();
}
private DirectoryEntry CreateDirectoryEntry(string strImportStart, string strUserName, string strPassword)
{
object o = null;
DirectoryEntry dirEntry = new DirectoryEntry(strImportStart);
dirEntry.AuthenticationType = (System.DirectoryServices.AuthenticationTypes.Secure |
System.DirectoryServices.AuthenticationTypes.Sealing |
System.DirectoryServices.AuthenticationTypes.Signing);
dirEntry.Username = strUserName;
dirEntry.Password = strPassword;
o = dirEntry.NativeObject; //This forces the bind and will throw an exception if bind is not valid.
return dirEntry;
}
private DirectorySearcher CreateSearcher(DirectoryEntry dirEntry, bool bFollowReferrals)
{
DirectorySearcher dirSearcher = new DirectorySearcher(dirEntry);
if (bFollowReferrals)
dirSearcher.ReferralChasing = ReferralChasingOption.All;
else
dirSearcher.ReferralChasing = ReferralChasingOption.None;
return dirSearcher;
}
private SearchResultCollection GetObjectsWithFilter(DirectorySearcher dirSearcher, string strSearchFilter, ArrayList alAttributesToLoad, int nMaxPageSize, int nPageTimeLimitInSecs)
{
SearchResultCollection colResults = null;
dirSearcher.Filter = strSearchFilter;
dirSearcher.SearchScope = SearchScope.Subtree;
if (alAttributesToLoad != null)
{
foreach (string strProperty in alAttributesToLoad)
{
dirSearcher.PropertiesToLoad.Add(strProperty);
}
}
dirSearcher.PageSize = nMaxPageSize;
dirSearcher.ServerPageTimeLimit = TimeSpan.FromSeconds(nPageTimeLimitInSecs);
Console.WriteLine("");
Console.WriteLine("ABOUT TO IMPORT");
Console.WriteLine("Asynchronous = " + dirSearcher.Asynchronous.ToString());
Console.WriteLine("Cache Results = " + dirSearcher.CacheResults.ToString());
Console.WriteLine("Client Timeout = " + dirSearcher.ClientTimeout);
Console.WriteLine("Filter = " + dirSearcher.Filter);
Console.WriteLine("Page Size = " + dirSearcher.PageSize);
Console.WriteLine("Referral Chasing = " + dirSearcher.ReferralChasing.ToString());
Console.WriteLine("Search Scope = " + dirSearcher.SearchScope.ToString());
Console.WriteLine("Server Page Time Limit = " + dirSearcher.ServerPageTimeLimit);
Console.WriteLine("Server Time Limit = " + dirSearcher.ServerTimeLimit);
Console.WriteLine("Size Limit = " + dirSearcher.SizeLimit);
Console.WriteLine("Tombstone = " + dirSearcher.Tombstone);
colResults = dirSearcher.FindAll();
return colResults;
}
}
}