log error in DotNetNuke

(new DotNetNuke.Services.Log.EventLog.EventLogController())
.AddLog("Exception", ex.ToString(), DotNetNuke.Entities.Portals.PortalSettings.Current,
-1, DotNetNuke.Services.Log.EventLog.EventLogController.EventLogType.ADMIN_ALERT);


or


catch (Exception ex)
{
DotNetNuke.Services.Exceptions.Exceptions.LogException(ex);
//throw;
}