DirectorySearcher returns ERROR_MORE_DATA

Question

I have developed an application that talks to the Directory Server and gets user information.

This application is a generic one and can talk to Active Directory or Any other Directory Services.

In one case where i use this application to read data from Radiant One VDS, the application fails with the ERROR_MORE_DATA . Following is the code that returns this error:

 try
{
  using (DirectoryEntry de = new DirectoryEntry("LDAP://" + server + "/" + basedn, username, pwd,AuthenticationTypes.None))
  {
    using (DirectorySearcher Searcher = new DirectorySearcher(de))
    {
      Searcher.Filter = "(&(objectClass=user))";
      Searcher.ReferralChasing = ReferralChasingOption.All;
      Searcher.PropertiesToLoad.Add("cn");
      Searcher.PropertiesToLoad.Add("memberof");
      Searcher.PageSize = 1000;

      using (SearchResultCollection allUsers = Searcher.FindAll())
      {                            
        foreach (SearchResult user in allGroups)
        {
          .
          .
          .
          .
        }
      }
    }
  }
}
catch(System.Exception ex)
{
}

In the above code, Searcher.FindAll() returns ERROR_MORE_DATA . When i searched i found the this article.

But, this article talks about .NET 1.0 and my application runs with .NET 3.5

Can you anyone please help me here? Is there any way to fix this without going for DirectoryServices.Protocols ?

Answer 1

Generally, this issue comes in the following situation:-

If one or more entries are found in Network and the buffer size is not enough to hold it. see ERROR_MORE_DATA

You just need to specify the size of buffer. see: specify the size of buffer in network call