fetch gmail calendar events in mvc 4 application - asp.net-mvc-4

Question

I am working on mvc 4 web application. I want to implement a functionality wherein the scenario is as follows-
There will be gmail id as input for ex: abc#gmail.com. When user will enter this, application should fetch all the calendar events of that respective email id and display them.
I have gone through this-
http://msdn.microsoft.com/en-us/library/live/hh826523.aspx#cal_rest
https://developers.google.com/google-apps/calendar/v2/developers_guide_protocol
I am new to this and i have searched a lot but not got any solution. Please help! Thanks in advance!

Answer 1

Got the solution . Just refer this.
https://github.com/nanovazquez/google-calendar-sample

Answer 2

Please check the steps below.
Add Google Data API SDK.
Try this code.. I wrote this code for one project but I removed some codes that are not related to Google Calender. If you don't want to use SDK, you can simply do http-get or http-post to your calender link based on spec.
CalendarService service = new CalendarService("A.Name");
const string GOOGLE_CALENDAR_FEED = "https://www.google.com/calendar/feeds/";
const string GOOGLE_CALENDAR_DEFAULT_ALL_CALENDAR_FULL = "default/allcalendars/full";
const string GOOGLE_CALENDAR_ALL_PRIVATE_FULL = "private/full";
private void SetUserCredentials() {
var userName = ConfigurationManager.AppSettings["GoogleUserName"];
var passWord = Security.DecryptString(ConfigurationManager.AppSettings["GooglePasswrod"]).ToInsecureString();
if (userName != null && userName.Length > 0) {
service.setUserCredentials(userName, passWord);
}
}
private CalendarFeed GetCalendarsFeed() {
CalendarQuery calendarQuery = new CalendarQuery();
calendarQuery.Uri = new Uri(GOOGLE_CALENDAR_FEED + GOOGLE_CALENDAR_DEFAULT_ALL_CALENDAR_FULL);
CalendarFeed resultFeed = (CalendarFeed)service.Query(calendarQuery);
return resultFeed;
}
private TherapistTimeSlots GetTimeSlots(CalendarEntry entry2) {
string feedstring = entry2.Id.AbsoluteUri.Substring(63);
var postUristring = string.Format("{0}{1}/{2}", GOOGLE_CALENDAR_FEED, feedstring, GOOGLE_CALENDAR_ALL_PRIVATE_FULL);
EventFeed eventFeed = GetEventFeed(postUristring);
slot.Events = new List<Event>();
if (eventFeed != null) {
var orderEventList = (from entity in eventFeed.Entries
from timeslot in ((EventEntry)entity).Times
orderby timeslot.StartTime
select entity).ToList();
}
return slot;
}
private EventFeed GetEventFeed(string postUristring) {
var eventQuery = new EventQuery();
eventQuery.Uri = new Uri(postUristring);
var h = Convert.ToInt32(DateTime.Now.ToString("HH", System.Globalization.DateTimeFormatInfo.InvariantInfo));
eventQuery.StartTime = new DateTime(DateTime.Now.Year, DateTime.Now.Month, DateTime.Now.Day, h, 0, 0);
eventQuery.EndTime = new DateTime(DateTime.Now.Year, DateTime.Now.Month, DateTime.Now.Day, h + 2, 0, 0);
try {
EventFeed eventFeed = service.Query(eventQuery) as EventFeed;
return eventFeed;
}
catch (Exception ex) {
/*
* http://groups.google.com/group/google-calendar-help-dataapi/browse_thread/thread/1c1309d9e6bd9be7
*
* Unfortunately, the calendar API will always issue a redirect to give you a
gsessionid that will optimize your subsequent requests on our servers.
Using the GData client library should be transparent for you as it is taking
care of handling those redirect; but there might some times where this error
occurs as you may have noticed.
The best way to work around this is to catche the Exception and re-send the
request as there is nothing else you can do on your part.
*/
return null;
}
}