Logging out from facebook using facebook c# sdk in WP7 - facebook

Question

I want to implement logout from facebook using facebook C# sdk in my windows phone app
My primary question is how do we logout using Facebook C# SDK in WP7
I found this article in search
Article link
there he is trying to find the logout url using regex, but that did not working in my app
when i try that the browser navigated event is going into infinite loop
you can share any samples/posts related to facebook logout in windows phone 7.
I want logout should happen with out user intervention, after he clicks on a button he should looged out from facebook and from next time he should see the login page
I tried following posts/blogs also but no use.
LINK 1
LINK 2 this giving error while splitting the accesstoken
UPDATE
LogOutButtonCode
FacebookClient _fbClient = new FacebookClient(fbaccess.AccessToken);
var logoutParams = new Dictionary<string, object>();
logoutParams.Add("next", "https://www.facebook.com/connect/login_success.html");
//logoutParams.Add("",)
var logoutUrl = _fbClient.GetLogoutUrl(logoutParams);
BrowserControl.Navigated += new EventHandler<System.Windows.Navigation.NavigationEventArgs>(BrowserControl_Navigated);
BrowserControl.Navigate(new Uri(logoutUrl.AbsoluteUri));
Navigated Event CODE
if (e.Uri.AbsoluteUri == "https://www.facebook.com/connect/login_success.html")
{
NavigationService.Navigate(new Uri("/MainPage.xaml", UriKind.Relative));
}
e.Uri.AbsoluteUri returns https://www.facebook.com/home.php
Logout URL i am getting from the server https://www.facebook.com/logout.php?next=https://www.facebook.com/connect/login_success.html

Answer 1

Use FacebookClient.Logout to generate the logout url.
This is the snippet from winforms sample which will work in wp7 with some modifications.
private void btnLogout_Click(object sender, EventArgs e)
{
var fb = new FacebookClient();
var logoutUrl = fb.GetLogoutUrl(new
{
next = "https://www.facebook.com/connect/login_success.html",
access_token = _accessToken
});
var webBrowser = new WebBrowser();
webBrowser.Navigated += (o, args) =>
{
if (args.Url.AbsoluteUri == "https://www.facebook.com/connect/login_success.html")
Close();
};
webBrowser.Navigate(logoutUrl.AbsoluteUri);
}
Make sure to persist the access token somewhere when you login as it is required to logout.