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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.Messaging;
using DotNetOpenAuth.OAuth2;
public partial class Facebook : System.Web.UI.Page
{
private static readonly FacebookClient facebookClient = 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 facebookClient.ProcessUserAuthorizationAsync(new HttpRequestWrapper(Request), ct);
if (authorization == null) {
// Kick off authorization request
var request = await facebookClient.PrepareRequestUserAuthorizationAsync(cancellationToken: ct);
await request.SendAsync(new HttpContextWrapper(Context), ct);
this.Context.Response.End();
// alternatively you can ask for more information
// facebookClient.RequestUserAuthorization(scope: new[] { FacebookClient.Scopes.Email, FacebookClient.Scopes.UserBirthday });
} else {
IOAuth2Graph oauth2Graph = await facebookClient.GetGraphAsync(authorization, cancellationToken: ct);
//// IOAuth2Graph oauth2Graph = facebookClient.GetGraph(authorization, new[] { FacebookGraph.Fields.Defaults, FacebookGraph.Fields.Email, FacebookGraph.Fields.Picture, FacebookGraph.Fields.Birthday });
this.nameLabel.Text = HttpUtility.HtmlEncode(oauth2Graph.Name);
}
}));
}
}
}
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