Error: The Server is not operation.

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Hi,
I am using window authentication in application. Here is some requirement to access all groups from domain name(retail.abg.com), & IP address is 10.557.847.55.
I am using light weight directory access protocol. my code throw error like
The server is not operational.
my code is given below.

C#

public List<string> ListGroups()
       {
           List<string> grp = new List<string>();
           string LDAP = "LDAP://";
           DirectoryEntry objADAM = default(DirectoryEntry);
           DirectoryEntry objGroupEntry = default(DirectoryEntry);
           DirectorySearcher objSearchADAM = default(DirectorySearcher);
           SearchResultCollection objSearchResults = default(SearchResultCollection);
           SearchResult myResult = null;
           try
           {
               objADAM = new DirectoryEntry(LDAP + "retail.abg.com");
               objADAM.RefreshCache();
               objSearchADAM = new DirectorySearcher(objADAM);
               objSearchADAM.Filter = "(&(objectClass=group))";
               objSearchADAM.SearchScope = SearchScope.Subtree;
               objSearchResults = objSearchADAM.FindAll();

               // Enumerate groups

               //fileGroups.AutoFlush = true;
               if (objSearchResults.Count != 0)
               {
                   foreach (SearchResult objResult in objSearchResults)
                   {
                       myResult = objResult;
                       objGroupEntry = objResult.GetDirectoryEntry();
                       grp.Add(objGroupEntry.Name);
                   }


               }
               else
               {
                   throw new Exception("No groups found");
               }
           }

           catch (Exception e)
           {
               throw new Exception(e.Message);
           }

           return grp;
       }

please help

Thanks
Ganu

Posted 17-Oct-12 18:55pm

Sharma Ganu

Updated 18-Oct-12 2:21am

I.explore.code

v2

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TheCoolCoder · Answer 1 · 2012-10-17T19:36:00

Solution 1

See if this helps

Querying Microsoft Active Directory Using Microsoft .NET Framework Library[^]

Hope it helps.

Posted 17-Oct-12 19:36pm

TheCoolCoder

Sharma Ganu · Answer 2 · 2012-10-18T02:09:00

C#

UserPrincipal current_user = UserPrincipal.Current;

            PrincipalContext current_context = current_user.Context;

            PrincipalContext ctx = new PrincipalContext(ContextType.Machine, "10.200.202.89");

            GroupPrincipal qbeUser = new GroupPrincipal(ctx);

            Principal userOrGroup = qbeUser as Principal;

            userOrGroup.Name = "*";

            PrincipalSearcher searcher = new PrincipalSearcher(userOrGroup);

            List<string> AllGroups = new List<string>();


            foreach (Principal found in searcher.FindAll())
            {
                if (found is GroupPrincipal)
                {

                    AllGroups.Add(found.Name);
                }
            }

            return AllGroups;


        }</string></string>