Use objectCategory attribute instead of objectClass where ever possible. Active Directory documentation mentions two things related to this issue: • objectClass attribute can have multiple values. This can be a problem especially if you are retriving objectClass. You can end up with multiple values! • objectCategory is an indexed attribute in Active Directory. So using objectCategory speeds up queries. The second point is more important because all the examples given in MSDN use objectClass, whereas using objectCategory will speed up queries! Try to use PropertiesToLoad and PropertyNamesOnly properties of DirectorySearcher if you know what properties you are trying to retrieve. If PropertyNamesOnly is set to true, the query will fetch the names of only those properties for which a value is set. Giving names of properties to be loaded to PropertiesToLoad will reduce the fetch time. By default PropertiesToLoad is set to an empty StringCollection to fetch all the properties, and PropertyNamesOnly is set to false to retrieve all properties' names even if a value is not set. In my demo I have given 'name' property to be loaded and set PropertyNamesOnly to true. Please note that even if not specified objectClass and objectCategory propertied are automatically loaded whenever an object is fetched. RenniePet 12-Jan-10 8:07 12-Jan-10 8:07 First, I was very happy to find this project. It got me up and running with LDAP very quickly. ![]() Many thanks to the author. But after some modifications so I optionally fetch only certain properties via the DirectorySearcher.PropertiesToLoad property, I realized that LDAP was still returning all of the properties for each directory entry, not just the ones I wanted. After much tearing out of hair and Googling, I found this very helpful article: [] Basically, I think the program presented in this Code Project article has a design fault, or maybe two of them. The idea of doing an LDAP search should be that the results returned by the DirectorySearcher.FindAll() function should contain all the data you need without any further LDAP access, at least for a simple application like this. But this program uses the SearchResult.GetDirectoryEntry() function on each returned object. This invokes LDAP all over again, once for each directory entry, and obtains all of the properties for each directory entry, even if you have explicitly used DirectorySearcher.PropertiesToLoad to avoid that. This program contains this statement and comment: ds.PropertyNamesOnly = true; // this will get names of only those properties to which a value is set This is very confusing - it took me a long time to figure out what the DirectorySearcher.PropertyNamesOnly property really does, mostly because Microsoft's explanation is really, really poor and confusing. So what I'm trying to say is that for a simple application where you use LDAP to get some data from Active Directory (or a Domino Server - it's almost the same), you should not use DirectorySearcher.PropertyNamesOnly and you should not have to use SearchResult.GetDirectoryEntry(). See the other article for details of how to process the data returned by DirectorySearcher.FindAll(). Hope this is of some help. I was able to get this up and running under Visual Studio 2008 without much trouble. First I let Visual Studio convert the VS 2003 solution, which it did without reporting any errors. Java Active Directory Example![]() ![]() ![]() Nov 2, 2016 - Querying Active Directory in Java Using the JNDI. Pam ldap active directory debian jessie. A way for Java programs to interact with a directory service such as Active Directory. Querying Active Directory Using Java Free![]() Sql Query Active Directory UsersBut then the forms designer complained that the form definition statements were corrupt. Moving these four statements: this.FormBorderStyle = FormBorderStyle.FixedSingle; this.MaximizeBox = false; this.Name = ' ADQForm'; this.Text = ' Querying Active Directory Service'; from where they were into the constructor fixed that problem. After that it just worked. Except, see my next message about what I consider to be a design fault.
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