private void MainForm_Load(object sender, EventArgs e)
        {
            //MessageBox.Show(ConfigurationManager.ConnectionStrings["PcAxisDatabase"].ConnectionString);
            //PxMetaModel.PcAxisMetabaseEntities db = new PxMetaModel.PcAxisMetabaseEntities();
            //loading the treeview items
            var      menuStart = VariableFacade.GetMenuStart();
            TreeNode start     = tvMenuSelection.Nodes.Add(menuStart.PresText);

            start.Name = menuStart.Menu;
            start.Tag  = menuStart;
            PopulateTree(start);
            TreeViewFormat(start);

            presentationComboBox.DataSource        = Option.GetOptions("Presentation");
            presentationEnglishComboBox.DataSource = Option.GetOptions("Presentation");
        }