How to set email to a user in Active Directory programatically using c#

Question

I have programatically created a user in Active Directory. I want to set that user's email. I used the following code to set email address in active directory:

UserDirectoryEntry.Properties["mail"].Value = "[e-mail]";
UserDirectoryEntry.CommitChanges();

At this point, the email address gets set in active directory properly. But the moment, i try to update another property for that user say for eg:

UserDirectoryEntry.Properties["telephoneNumber"].value = "022-2345678";
UserDirectoryEntry.CommitChanges();

After this point, the email address that we set earlier to "mail" field gets replaced with [e-mail].

Can you please tell me why the email address is getting replaced with [e-mail] even if i have set it to "[e-mail]". I m using APIs of Active Directory.

Answer 1

I do not know if this works for you, but you can try adding the email instead of setting it:

UserDirectoryEntry.Properties["mail"].Add("[e-mail]");

You will be still able to find the user bu this email.