/// <summary>
 /// 检查编码
 /// </summary>
 /// <param name="appid"></param>
 /// <param name="userid"></param>
 /// <returns></returns>
 public string checkappid(string appid, int moduleid = 0)
 {
     using (var manage = new Data.CMSManage())
     {
         if (!string.IsNullOrEmpty(appid))
         {
             appid = appid.ToLower();
         }
         return(manage.checkModuleAppId(appid, moduleid).ToString().ToLower());
     }
 }