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namespace OAuthClient {
using System;
using System.Configuration;
using System.Net;
using System.Web;
using System.Web.UI;
using DotNetOpenAuth.ApplicationBlock;
using DotNetOpenAuth.ApplicationBlock.Facebook;
using DotNetOpenAuth.Messaging;
using DotNetOpenAuth.OAuth2;
public partial class Facebook : System.Web.UI.Page {
private static readonly FacebookClient client = new FacebookClient {
ClientIdentifier = ConfigurationManager.AppSettings["facebookAppID"],
ClientCredentialApplicator = ClientCredentialApplicator.PostParameter(ConfigurationManager.AppSettings["facebookAppSecret"]),
};
protected void Page_Load(object sender, EventArgs e) {
this.RegisterAsyncTask(
new PageAsyncTask(
async ct => {
IAuthorizationState authorization =
await client.ProcessUserAuthorizationAsync(new HttpRequestWrapper(Request), ct);
if (authorization == null) {
// Kick off authorization request
var request =
await client.PrepareRequestUserAuthorizationAsync(cancellationToken: ct);
await request.SendAsync(new HttpContextWrapper(Context), ct);
this.Context.Response.End();
} else {
var request =
WebRequest.Create(
"https://graph.facebook.com/me?access_token=" + Uri.EscapeDataString(authorization.AccessToken));
using (var response = request.GetResponse()) {
using (var responseStream = response.GetResponseStream()) {
var graph = FacebookGraph.Deserialize(responseStream);
this.nameLabel.Text = HttpUtility.HtmlEncode(graph.Name);
}
}
}
}));
}
}
}
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