Set attribute LDAP

SetAttributeLDAP.cs

var connectionObject = new LdapConnection(new LdapDirectoryIdentifier(controller), new NetworkCredential(username, password));
var directoryAttributeModification = new DirectoryAttributeModification();
directoryAttributeModification.Name = attribute;
directoryAttributeModification.Operation = DirectoryAttributeOperation.Replace;

foreach (var value in values)
{
    if (value is byte[])
    {
        directoryAttributeModification.Add(value as byte[]);
    }
    else
    {
        directoryAttributeModification.Add(value.ToString());
    }
}

var response = connectionObject.SendRequest(new ModifyRequest
{
    DistinguishedName = dn,
    Modifications =
    {
        directoryAttributeModification
    }
});