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namespace OAuthConsumer {
using System;
using System.Configuration;
using System.Linq;
using System.Text;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Xml.Linq;
using DotNetOpenAuth.ApplicationBlock;
using DotNetOpenAuth.OAuth;
/// <summary>
/// A page to demonstrate downloading a Gmail address book using OAuth.
/// </summary>
public partial class GoogleAddressBook : System.Web.UI.Page {
private string AccessToken {
get { return (string)Session["GoogleAccessToken"]; }
set { Session["GoogleAccessToken"] = value; }
}
private InMemoryTokenManager TokenManager {
get {
var tokenManager = (InMemoryTokenManager)Application["GoogleTokenManager"];
if (tokenManager == null) {
string consumerKey = ConfigurationManager.AppSettings["googleConsumerKey"];
string consumerSecret = ConfigurationManager.AppSettings["googleConsumerSecret"];
if (!string.IsNullOrEmpty(consumerKey)) {
tokenManager = new InMemoryTokenManager(consumerKey, consumerSecret);
Application["GoogleTokenManager"] = tokenManager;
}
}
return tokenManager;
}
}
protected void Page_Load(object sender, EventArgs e) {
if (this.TokenManager != null) {
this.MultiView1.ActiveViewIndex = 1;
if (!IsPostBack) {
var google = new WebConsumer(GoogleConsumer.ServiceDescription, this.TokenManager);
// Is Google calling back with authorization?
var accessTokenResponse = google.ProcessUserAuthorization();
if (accessTokenResponse != null) {
this.AccessToken = accessTokenResponse.AccessToken;
} else if (this.AccessToken == null) {
// If we don't yet have access, immediately request it.
GoogleConsumer.RequestAuthorization(google, GoogleConsumer.Applications.Contacts);
}
}
}
}
protected void getAddressBookButton_Click(object sender, EventArgs e) {
var google = new WebConsumer(GoogleConsumer.ServiceDescription, this.TokenManager);
XDocument contactsDocument = GoogleConsumer.GetContacts(google, this.AccessToken, 5, 1);
var contacts = from entry in contactsDocument.Root.Elements(XName.Get("entry", "http://www.w3.org/2005/Atom"))
select new { Name = entry.Element(XName.Get("title", "http://www.w3.org/2005/Atom")).Value, Email = entry.Element(XName.Get("email", "http://schemas.google.com/g/2005")).Attribute("address").Value };
StringBuilder tableBuilder = new StringBuilder();
tableBuilder.Append("<table><tr><td>Name</td><td>Email</td></tr>");
foreach (var contact in contacts) {
tableBuilder.AppendFormat(
"<tr><td>{0}</td><td>{1}</td></tr>",
HttpUtility.HtmlEncode(contact.Name),
HttpUtility.HtmlEncode(contact.Email));
}
tableBuilder.Append("</table>");
this.resultsPlaceholder.Controls.Add(new Literal { Text = tableBuilder.ToString() });
}
}
}
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