bool isPag = true;

                 foreach (TabPage page in tbpDynamicMenu.TabPages)

                 {

                     if (nodeName.Equals(page.Text))

                     {

                         tbpDynamicMenu.SelectedTab = page;

                         isPag = false;

                         break;

                     }

                 }

                 if (isPag)

                 {

                     //添加选卡

                     TabPage tbp = new TabPage();

                     tbp.Text = nodeName;

                     tbpDynamicMenu.Controls.Add(tbp);

                     tbpDynamicMenu.SelectedTab = tbp;

                 }