从Active Directory获取部门列表缺少某些部门

时间:2012-09-25 13:51:58

标签: c# active-directory directoryservices

我有一个方法,我使用获取活动目录中的部门列表。然而,有些人(至少有一个我所知道的)没有出现。 “EMP-Alumni Relations”是我目前正在排除的问题。

这是我正在使用的代码。如果有人能够发现任何潜在的问题,我将不胜感激。我暂时不知所措。我已经确定了几个部门的用户,所以我知道这不应该是问题。

ArrayList GetAdDepts (  )
    {
        DirectoryEntry myLdapConnection = SCDirectoryEntry.GetDirectoryEntry ( );
        DirectorySearcher search = new DirectorySearcher ( myLdapConnection );
        search.Filter = "(objectClass=user)";
        search.PropertiesToLoad.Add ( "department" );
        SearchResultCollection result = search.FindAll ( );
        ArrayList departments = new ArrayList ( );
        foreach ( SearchResult depart in result )
        {
            DirectoryEntry directoryEntry = depart.GetDirectoryEntry ( );

            if ( directoryEntry.Properties.Contains ( "department" ) )
            {
                string dept = ( string ) depart.Properties [ "department" ] [ 0 ];
                if ( dept.Trim ( ).StartsWith ( "EMP-" ) )
                {
                    if ( !departments.Contains ( dept ) )
                    {
                        departments.Add ( dept );
                    }
                }
            }

        }
        return departments;
    }

1 个答案:

答案 0 :(得分:2)

是否有超过1000名用户?如果是这样,您可能达到了限制described in the answer to this question

尝试设置:

search.PageSize = ... some non-zero value ...;

此外,您应该使用使用声明处理您的一次性物品DirectorySearcherSearchResultCollectionDirectoryEntry,例如:

using (var search = new DirectorySearcher(myLdapConnection ))
{
    search.Filter = "(objectClass=user)";          
    search.PropertiesToLoad.Add ( "department" );          
    search.PageSize = 1000; // any non-zero value will work
    using (var result = search.FindAll ( ))
    {
        ...
        foreach ( SearchResult depart in result )             
        {                 
            using (var directoryEntry = depart.GetDirectoryEntry ( ))
            {
                ...
            }
        }
    }
}