public async Task Delete(Guid userId, string eventId) { try { var item = _iSysUserService.GetById(userId); if (string.IsNullOrEmpty(item.GoogleUserName) || string.IsNullOrEmpty(item.GooglePassword)) return; var myService = new CalendarService(item.GoogleUserName); myService.setUserCredentials(item.GoogleUserName, item.GooglePassword); var calendar = myService.Get("https://www.google.com/calendar/feeds/default/private/full/" + eventId); foreach (var item1 in calendar.Feed.Entries) { item1.Delete(); } } catch { } }