Directory Services


The ldap_add function initiates an asynchronous add operation to a directory tree. For an add operation to succeed, the parent of the entry added must exist, or the parent must be empty (equal to the distinguished name of the root).

ULONG ldap_add(
  LDAP* ld,
  PCHAR dn,
  LDAPMod* attrs[]


[in] The session handle.
[in] A pointer to a null-terminated string that contains the distinguished name of the entry to add.
[in] An array of pointers to LDAPMod structures. Each structure specifies a single attribute.

Return Values

If the function succeeds, the message ID of the add operation is returned.

If the function fails, it returns –1 and sets the session error parameters in the LDAP data structure. To retrieve the error data, use LdapGetLastError.


Before calling ldap_add, create an entry by specifying its attributes in LDAPMod structures. Set the mod_op member of each structure to LDAP_MOD_ADD, and set the mod_type and mod_vals members as appropriate for your entry.

As an asynchronous function, ldap_add returns a message ID for the operation. Call ldap_result with the message ID to get the result of the operation. To cancel an asynchronous add operation before it has been completed, call ldap_abandon.

To have the results returned directly, use the synchronous function ldap_add_s. Use ldap_add_ext or ldap_add_ext_s to enable support for LDAP 3 server and client controls.

Multithreading: Calls to ldap_add are thread-safe, provided that LdapGetLastError is used to retrieve the actual session error code when the function call returns the -1 failure code.

Note  When connecting to an LDAP 2 server, the application must perform a bind operation, by calling one of the ldap_bind or ldap_simple_bind routines, before attempting other operations.


Client: Included in Windows XP and Windows 2000 Professional.
Server: Included in Windows Server 2003 and Windows 2000 Server.
Redistributable: Requires Active Directory Client Extension on Windows NT 4.0 SP6a and Windows 95/98/Me.
Unicode: Implemented as Unicode and ANSI versions on all platforms.
Header: Declared in Winldap.h.
Library: Use Wldap32.lib.

See Also

Functions, ldap_abandon, ldap_add_ext, ldap_add_ext_s, ldap_add_s, ldap_bind, ldap_result, ldap_simple_bind, LDAP, LDAPMod, Modifying a Directory Entry, Synchronous vs. Asynchronous Calls