//public static void PopulateRolelist(DropDownListAdv RolesDropDownList, string[] hiddenRoles)
        //{
        //    PopulateRolelist(RolesDropDownList.DropDownList, hiddenRoles);
        //}

        public static void PopulateRolelist(DropDownList RolesDropDownList, string[] hiddenRoles)
        {
            RolesDropDownList.DataSource = Roles.GetAllRoles();
            RolesDropDownList.DataBind();
            RolesDropDownList.AddSelect();

            Array.ForEach(hiddenRoles, role =>
            {
                if (RolesDropDownList.Items.FindByValue(role) != null)
                {
                    RolesDropDownList.Items.Remove(role);
                }
            });
        }