Facebook share in wp8 App - facebook

Question

I need to share a message on Facebook in my windows phone App by clicking share button. when click share button , if user has not logged in to Facebook, first we redirect to log in screen and then need to ask permission to publish.
public partial class FacebookLoginPage : PhoneApplicationPage
{
string uriToLaunch ;
// Create a Uri object from a URI string
Uri uri = null;
public FacebookLoginPage()
{
InitializeComponent();
uriToLaunch = #"fbconnect://authorize?client_id={AppID}&
scope=public_profile,publish_actions,read_stream&
redirect_uri=msft-{ProductId}%3a%2f%2fauthorize";
uri = new Uri(uriToLaunch);
this.Loaded += FacebookLoginPage_Loaded;
}
private void FacebookLoginPage_Loaded(object sender, RoutedEventArgs e)
{
DefaultLaunch();
}
// Launch the URI
async void DefaultLaunch()
{
// Launch the URI
var success = await Windows.System.Launcher.LaunchUriAsync(uri);
if (success)
{
// URI launched
}
else
{
// URI launch failed
}
}
}
I used above code , but permission screen not appears for publish. Output was as follows.
I followed example and used an AppId, then it works well. I feel that there is special configuration in Facebook App side . Please help me If anyone have idea about it.