private void BrowseDataDictionary_Load(object sender, EventArgs e)
        {
            AuthenticationUtils.startSession("admin", "sametsis");
            try
            {
                ClassDefinition[] classDefinitions = WebServiceFactory.getDictionaryService().getClasses(null, null);
                foreach (ClassDefinition classDefinition in classDefinitions)
                {
                    string displayLabel = classDefinition.title;
                    if (displayLabel != null && displayLabel.Trim().Length != 0)
                    {
                        ListViewItem item = new ListViewItem(classDefinition.title);
                        item.Tag = classDefinition;
                        listBoxClasses.Items.Add(item);

                        listBoxClasses.DisplayMember = "Text";
                        listBoxClasses.ValueMember   = "Tag";
                    }
                }
            }
            finally
            {
                AuthenticationUtils.endSession();
            }
        }