[c# .net asp.net MVC2] Import contacts gmail

In an application, you may need to import contacts from a gmail account.
The construction is very simple and based on the Google Data API, a collection of libraries that provides a simple protocol for reading and writing data from the web.

First, download the GoogleDataApi (you find here),  install them on your PC and add them as a reference to your project (in this case we can use Google.GData.Contacts.dll, Google.GData.Client.dll, Google.GData.Extensions.dll).
Importing different namespace

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using Google.GData.Contacts;
using Google.GData.Client;
using Google.GData.Extensions;

Now you are ready to implement the code to read your Gmail contacts.

string authSubUrl = AuthSubUtil.getRequestUrl("http://www.example.com/Hello.asp", "http://www.google.com/m8/feeds/", False, True);

GAuthSubRequestFactory authFactory = new GAuthSubRequestFactory("cp", "exampleCo-exampleApp-1");
authFactory.Token = (String)Session["token"];
ContactsService service = new ContactsService("exampleCo-exampleApp-1");
  service.setUserCredentials(email, password);
ContactsQuery query = new ContactsQuery(ContactsQuery.CreateContactsUri("default"));
ContactsFeed feed = service.Query(query);

At this point in the feed.Entries there are contacts.
enough to extrapolate a simple loop to read through all the contacts, for example:

foreach (ContactEntry item in feed.Entries)

{

      // in item.Name we have various "names" of the contact, for example:
      //item.Name.FullName
      //item.Name.FamilyName
      //item.Name.GivenName
      //item.Name.NamePrefix
      //item.Name.NameSuffix
      //item.Name.AdditonalName
     // item.Emails while inside we have all the addresses associated with the various properties,
    // So here just a simple read cycle to extract all the data:

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             foreach (EMail email in entry.Emails)

                {
                    // Email.Address you get in your email address
                    // In email.Home, email.Work, email.Other is a bool that
                    // Indicate if this address is
                    // Classified as Home, Work or Other

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                 }
}

Of course this is just an example of using these bees, for the simple extrapolation of the contacts from Gmail, the functions provided are varied and you can do much more.

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