public IEnumerable <string> SelectAllTopicNames()
 {
     //var props = typeof(UserMessageSetting).GetProperties().Where(x => x.PropertyType == typeof(bool?));
     //return props.Select(x => x.Name);
     using (var client = new Tuhu.Service.Push.MessageBoxPushClient())
     {
         var result = client.SelectAllMessageNavigationType();
         result.ThrowIfException(true);
         return(result.Result.Select(x => x.PushAlias));
     }
 }