I'm saying that those two are not equivalent functions under the hood. Add
typically does a PutEx with the append flag, while Put just does a "put",
which is essentially an LDAP "update" operation. I think you would have the
same problem if you invoked PutEx and used the Append flag.
.Value uses PutEx, but with the ADSI replace flag, which boils down to an
LDAP update operation.
Aren't all of the layers fun? :)
You can dig into the details a little more by using Reflector to reverse
compile System.DirectoryServices into your language of choice. That is how
Ryan and I learned most of what we know. Figuring out how ADSI calls LDAP
is pretty hard unless you have access to the Microsoft source code.
Sorry if the example in 3.13 was at all misleading or inconsistent, but I'll
stand by the more detailed stuff on attribute modification in Ch 6. Thanks
for buying it and I hope it helps more than hurts. There is an inevitable
amount of hair loss that must occur with any new LDAP programming project,
but hopefully it won't require prescription drugs or surgery to replace.
Joe K.
----- Original Message -----
From: "AD" <[EMAIL PROTECTED]>
To: <[email protected]>
Sent: Thursday, December 28, 2006 12:06 PM
Subject: RE: [ActiveDir] DirectoryServices vb.net is broken.
It worked. Thanks a million. Hopefully my hair won't take to long to grow
back.
I bought your book last week from amazon. I currently reading chapter 3.
Actually took your example code. See 3.13.vb. Isn't that funny?
I thought DirectoryServices was a wrapper to ADSI? Why do you say they are
not equivalent?
Y
They aren't equivalent. Try using the .Value property instead:
user.Properties("description").Value = xxxx
Description is a funny property in AD in that the schema says that it allows
multiple values, but the DS itself will only allow it to contain a single
value for backward compatibility with previous DS APIs. That might be part
of the problem here.
In any event, it is generally always good practice to use the .Value
property to set a single value. There is more info on this in ch 6 of our
book (www.directoryprogramming.net).
Joe K.
----- Original Message -----
From: "AD" <[EMAIL PROTECTED]>
To: <[email protected]>
Sent: Thursday, December 28, 2006 10:13 AM
Subject: [ActiveDir] DirectoryServices vb.net is broken.
I have a user with no description attribute.
Anyone know why this works?
User.Invoke("put", New Object() {"description", txtBxNewDescription.Text})
User.commitChanges
but this doesn't
User.Properties("Description").Add(txtBxNewDescription.Text)
User.commitChanges
I get the following error message.
ComError {"A constraint violation occurred. (Exception from HRESULT:
0x8007202F)"} System.DirectoryServices.DirectoryServicesCOMException
Thanks
Yves St-Cyr
List info : http://www.activedir.org/List.aspx
List FAQ : http://www.activedir.org/ListFAQ.aspx
List archive: http://www.activedir.org/ma/default.aspx
List info : http://www.activedir.org/List.aspx
List FAQ : http://www.activedir.org/ListFAQ.aspx
List archive: http://www.activedir.org/ma/default.aspx
List info : http://www.activedir.org/List.aspx
List FAQ : http://www.activedir.org/ListFAQ.aspx
List archive: http://www.activedir.org/ma/default.aspx
