protected void SelectTemplate(ChangeEventArgs e)
        {
            _selectedTemplate = int.Parse(e.Value.ToString());
            MailTemplate template = _templates.FirstOrDefault(t => t.Id == _selectedTemplate);

            if (template != null)
            {
                string[] result = template.BuildMail(aduser.FullName, stockUser.FullName, stockUser.OfficeRole, _items);
                _subject = result[0];
                _body    = result[1];
                FireStringChange();
            }
        }