private void SettingsButton_Click(object sender, RoutedEventArgs e)
        {
            SettingsForm     sf            = new SettingsForm();
            AppConfiguration configuration = ConfigurationManager.GetInstance().Configuration;

            sf.BindControls(configuration);
            if (sf.ShowDialog(null, "Configuration") == true)
            {
                ConfigurationManager.GetInstance().SaveAppConfiguration();
                ItemsManager.ConnectorMainViewRefreshControls(this.DocumentTemplateSelection, this.SearchExplorer, this.ConnectorExplorer, this.WorkflowExplorer, tabControl1, WorkflowTabItem, TemplateTabItem, SearchTabItem, NavigatorTabItem);
            }
            else
            {
                ConfigurationManager.GetInstance().LoadConfiguration();
            }
        }