Step1 : Sign up with Google Apps
This is the first step to sign up as application developer.

Step2 : Token generation
This is the second step to generate token by providing authentication screen to the user who wants Google calendar to sync with. Example code :

• string url = GoogleAuthorizationHelper.GetAuthorizationUrl(email);
• var authenticator = GoogleAuthorizationHelper.GetAuthenticator(Request[“code”].ToString());

Step3 : Add/Edit/Delete event
This is the Third step to add/edit/delete event from your application same to google.
Example code :
// create the event.

var authenticator = GetAuthenticator(googletoken);
var service = new GoogleCalendarServiceProxy(authenticator);
Event insertedEntry = service.CreateEvent(new_entry);

// Edit event
var authenticator = GetAuthenticator(token);
var service = new GoogleCalendarServiceProxy(authenticator);
Event insertedEntry = service.UpdateEvent(calendarEvent);

// Delete event
var authenticator = GetAuthenticator(tokan);
var service = new GoogleCalendarServiceProxy(authenticator);
service.DeleteEvent(Convert.ToString(Request[“Email”]),

Convert.ToString(Request[“GoogleEventID”]));

Generation of the Authentication Token

• As per the image below the first step is to generate authentication token based on the email provided.
• Add event in Google calendar from Classic ASP/.NET application and vice versa
• Edit event in Google calendar from Classic ASP/.NET application and vice versa
• Delete event in Google calendar from Classic ASP/.NET application and vice versa
• Sync event in Google calendar from Classic ASP/.NET application and vice versa
• Add/Edit/Delete repeat event Google calendar from Classic ASP/.NET application and vice

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