Delete attribute LDAP

DeleteAttributeLDAP.cs

var connectionObject = new LdapConnection(new LdapDirectoryIdentifier(controller), new NetworkCredential(username, password));
var directoryAttributeModification = new DirectoryAttributeModification();
directoryAttributeModification.Name = attribute;
directoryAttributeModification.Operation = DirectoryAttributeOperation.Delete;
var response = connectionObject.SendRequest(new ModifyRequest
{
    DistinguishedName = dn,
    Modifications =
    {
        directoryAttributeModification
    }
});