protected void buttonDown_Click(object sender, EventArgs e)
    {
        Button buttonDown = (Button)sender;
        NavBarGroupTemplateContainer templateContainer = (NavBarGroupTemplateContainer)buttonDown.NamingContainer;

        if (templateContainer.Group.Index != ASPxNavBar1.Groups.Count - 1)
        {
            templateContainer.Group.Index++;
        }
    }
    protected void buttonUp_Click(object sender, EventArgs e)
    {
        Button buttonUp = (Button)sender;
        NavBarGroupTemplateContainer templateContainer = (NavBarGroupTemplateContainer)buttonUp.NamingContainer;

        if (templateContainer.Group.Index != 0)
        {
            templateContainer.Group.Index--;
        }
    }
    protected bool GetButtonUpEnabled(object container)
    {
        NavBarGroupTemplateContainer templateContainer = (NavBarGroupTemplateContainer)container;

        return(templateContainer.Group.Index != 0);
    }
    protected bool GetButtonDownEnabled(object container)
    {
        NavBarGroupTemplateContainer templateContainer = (NavBarGroupTemplateContainer)container;

        return(templateContainer.Group.Index != ASPxNavBar1.Groups.Count - 1);
    }