快速的方法来获取用户信息的Active Directory [英] Quick way to retrieve user information Active Directory

问题描述

如何查询从的Active Directory 用户信息？我有code这样的作品，但它真的很慢。我使用C＃。 这是code我目前使用的：

How to query user information from Active Directory? I have code that works, but it's really slow. I'm using C#. This is the code I currently use:

    static void Main(string[] args)
    {
        SearchResultCollection sResults = null;

        try
        {
            //modify this line to include your domain name
            string path = "LDAP://EXTECH";
            //init a directory entry
            DirectoryEntry dEntry = new DirectoryEntry(path);

            //init a directory searcher
            DirectorySearcher dSearcher = new DirectorySearcher(dEntry);

            //This line applies a filter to the search specifying a username to search for
            //modify this line to specify a user name. if you want to search for all
            //users who start with k - set SearchString to "k"
            dSearcher.Filter = "(&(objectClass=user))";

            //perform search on active directory
            sResults = dSearcher.FindAll();

            //loop through results of search
            foreach (SearchResult searchResult in sResults)
            {
                if (searchResult.Properties["CN"][0].ToString() == "Adit")
                {
                    ////loop through the ad properties
                    //foreach (string propertyKey in
                    //searchResult.Properties["st"])
                    //{

                        //pull the collection of objects with this key name
                        ResultPropertyValueCollection valueCollection =
                        searchResult.Properties["manager"];

                        foreach (Object propertyValue in valueCollection)
                        {

                            //loop through the values that have a specific name
                            //an example of a property that would have multiple
                            //collections for the same name would be memberof
                            //Console.WriteLine("Property Name: " + valueCollection..ToString());
                            Console.WriteLine("Property Value: " + (string)propertyValue.ToString());

                            //["sAMAccountName"][0].ToString();
                        }
                    //}
                    Console.WriteLine(" ");
                }
            }
        }
        catch (InvalidOperationException iOe)
        {
            //
        }
        catch (NotSupportedException nSe)
        {
            //
        }
        finally
        {

            // dispose of objects used
            if (sResults != null)
                sResults.Dispose();

        }
        Console.ReadLine();
    }

你会更快code模样，从AD获取用户信息？

What would faster code look like to get user information from AD?

推荐答案

之所以你的code是缓慢的是，你的 LDAP 查询检索每一个用户对象在您的域名，即使你只用平洞的一个共同的名字感兴趣的一个用户：

The reason why your code is slow is that your LDAP query retrieves every single user object in your domain even though you're only interested in one user with a common name of "Adit":

dSearcher.Filter = "(&(objectClass=user))";

因此​​，要优化，你需要缩小LDAP查询只是你感兴趣的用户尝试是这样的：

So to optimize, you need to narrow your LDAP query to just the user you are interested in. Try something like:

dSearcher.Filter = "(&(objectClass=user)(cn=Adit))";

另外，不要忘了处理这些对象完成时：

In addition, don't forget to dispose these objects when done:

• 的DirectoryEntry目录项
• DirectorySearcher从dSearcher

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