public static void AddModelPermissionToRoles(int roleId, string operateCodes)
 {
     foreach (string str in operateCodes.Split(split, StringSplitOptions.RemoveEmptyEntries))
     {
         if (Enum.IsDefined(typeof(OperateCode), str))
         {
             AddPermissionToRoles(roleId, (OperateCode)Enum.Parse(typeof(OperateCode), str, true));
         }
         else
         {
             dal.AddPermissionToRoles(roleId, MD5(str));
         }
     }
 }