public void AddTab(ITablerTab tab)
 {
     if (ActiveTab == null)
     {
         SetActivateTab(tab);
     }
 }
 public void RemoveTab(ITablerTab tab)
 {
     if (ActiveTab == tab)
     {
         SetActivateTab(null);
     }
 }
        public void SetActivateTab(ITablerTab tab)
        {
            if (tab == null)
            {
                return;
            }

            if (ActiveTab != tab)
            {
                ActiveTab = tab;
                StateHasChanged();
            }
        }