how to get user facebook logged in status - facebook

Question

i am working on a small application in asp.net, c# in my website, which shows user is logged into facebook in the same browser. Which means in the browser if user open my website(in same browser if user is not logged into facebook) a popup should show that user is not loggedin. if the user logged into facebook then a popup should come in my website showing that loggedin after refresh of my page.
in a page refresh i just want to alert the login status of user...
i had the xd_receiver.htm file in my root directory and
this script in header and
Untitled Page
<script src="http://static.ak.connect.facebook.com/js/api_lib/v0.4/FeatureLoader.js.php"
type="text/javascript"></script>
<script type="text/javascript" src="http://connect.facebook.net/en_US/all.js#appId=142899075774321&xfbml=1"></script>
<script type='text/javascript' language='javascript'>
window.onload = function() {
FB.init('142899075774321', 'xd_receiver.htm');
alert("Before ensureInit");
FB.ensureInit(function() {
alert("After ensureInit");
FB.Connect.ifUserConnected(onUserConnected, onUserNotConnected);
});
};
function onUserConnected() {
alert('connected!');
window.location.reload();
}
function onUserNotConnected() {
alert('not connected');
}
</script>
this script in body....
But this code is not working.....
how should i solve this......
thanks in advance

Answer 1

Try this for the html head part:
<title>Facebook Status</title>
<script src="http://static.ak.connect.facebook.com/js/api_lib/v0.4/FeatureLoader.js.php/en_US"
type="text/javascript">
</script>
<script type="text/javascript">
var api_key = 'Your app id';
var channel_path = 'xd_receiver.htm';
//alert(document.referrer);
FB_RequireFeatures(["XFBML"], function() {
// Create an ApiClient object, passing app's API key and
// a site relative URL to xd_receiver.htm
FB.Facebook.init(api_key, channel_path);
FB.Connect.get_status().waitUntilReady(function(status) {
switch(status) {
case FB.ConnectState.connected:
document.getElementById("divstatus").innerHTML ="LOGGED IN AUTHORIZED";
break;
case FB.ConnectState.appNotAuthorized:
document.getElementById("divstatus").innerHTML ="LOGGED IN NOT AUTHORIZED";
break;
case FB.ConnectState.userNotLoggedIn:
document.getElementById("divstatus").innerHTML ="NOT LOGGED IN";
break;
}
});
});
</script>
Then use this for the html > body part:
<div id="divstatus">
</div>