asp.net - Update Database if change in Google Calendar Event

Question

I am creating app in ASp.NET for Google Calendar. I am getting one problem like if i have created a meeting into Google calendar using my application and after that i manually deleted that meeting from Google calendar, and i am again creating a meeting on the same time then it is showing busy because i am have an entry in my database because i am manually deleted the meeting from Google calendar. so is there any other procedure of getting the notification if there is any change to our event on Google calendar...

 Channel channel = new Channel();
 channel.Id = System.Guid.NewGuid().ToString();               
 channel.Type = "web_hook";
 channel.Address = "https://www.translitepc.net/Notification.aspx";        
 Channel ch1 = service.Events.Watch(channel, "hjain@scheduleonce.com").Execute();

Answer 1

Google Calendar API now supports push notifications. You can use these to monitor changes to the calendar and keep the database synced up.