[subhasps8]

Hi,

I have inherited a sharepoint web part from dotnet Asp.net 2.0 that is
displaying task list in MOSS site. It calls FindAll() to locate a specific security
group, and then enumerates through the group to retrieve the user's
display names.

*Very* intermittently this web part will throw an exception - either
"System.Runtime.InteropServices.COMException: The server is not operational" or,
sometimes, "The authentication mechanism is
unknown". When I say intermittently, I mean very intermittently - it is
fine 60% of the time. There doesn't seem to be any pattern to the
errors .
I am really hoping someone can help, this is proving very difficult to
fix as it is so irregular.


Code

private DirectorySearcher GetDirectoryObject()
        {
            DirectoryEntry oDE = new DirectoryEntry("LDAP://MYDOMAIN", "username", "pwd", AuthenticationTypes.Secure);
            DirectorySearcher deSearch = new DirectorySearcher();
            deSearch.SearchRoot = oDE;
            return deSearch;
        }
        
        public string GetProperty(SearchResult searchResult, string PropertyName)
        {
            if (searchResult.Properties.Contains(PropertyName))
            {
                return searchResult.Properties[PropertyName][0].ToString();
            }
            else
            {
                return string.Empty;
            }
        }
 
       
        public string GetDept(string username)
        {
 
            DirectorySearcher deSearch = GetDirectoryObject();
            deSearch.Filter = "(&(objectClass=user)(SAMAccountName=" + username + "))";
            deSearch.SearchScope = SearchScope.Subtree;
            string UserDept = "";
            foreach (SearchResult results in deSearch.FindAll())
            {
                UserDept = GetProperty(results, "userPrincipalName");
 
            }
 
            return UserDept;
        } 

i wish i could offer some advice, but i dont know anything about share point. have you checked the server event log. it might have more detail..

[FreelanceMan]

Let me hazard a guess: what we're seeing isn't really the actual code that's failing. I want to know more about where you get "username" from. Clearly you're not hardcoding it, since that would be a bad idea. Everything I've read on this so far indicates that it nothing to do with Sharepoint and everything to do with creating a good connection to AD.

Hope the hint helps.