protected void Page_Load(object sender, EventArgs e)
{
var config = new Dictionary<string, object>();
//your application id and secret from https://developers.facebook.com/apps
config.Add("appId", "3955...........");
config.Add("secret", "4c1d099f9377b52eb...............");
config.Add("fileUpload", true); //optional
FacebookClient client = new FacebookClient(config);
ulong facebookId = client.getUser();
var loginPrms = new Dictionary<string, object>();
string[] permissions = { "email", "friends_likes", "publish_stream" };
//or you can use the helper classes FacebookUserDataPermissions, FacebookFriendDataPermissions, FacebookExtendedPermissions for autocomplete in visual studio.
//string[] permissions = {FacebookUserDataPermissions.email, FacebookFriendDataPermissions.friends_likes, FacebookExtendedPermissions.publish_stream};
loginPrms.Add("scope", permissions); //optional
//your application url
loginPrms.Add("redirect_uri", new Uri("http://apps.facebook.com/yourappnamespace"));
//you can save this random string to a session variable check at the beginning for csrf protection.
loginPrms.Add("state", "randomstring"); //optional
//the default value is "page" you can change this to "popup".
loginPrms.Add("display", "page"); //optional
var logoutPrms = new Dictionary<string, object>();
//optional logout redirect uri.
logoutPrms.Add("next", "http://apps.facebook.com/yourappnamespace");
//the user is not added the application we redirect it to our permission screen.
if (facebookId == 0)
{
Response.Write("<script>top.location.href='" + client.getLoginUrl(loginPrms) + "';</script>");
}
else
{
//we get the short lived access token and exchange it for 60 days extension.
client.setExtendedAccessToken();
//all methods and their return values for testing
// getAccessToken first retrieves the application access token, if exists this value is changed to user access token for our application.
Response.Write("php sdk equivalent $facebook->getAccessToken();" + client.getAccessToken() + "<br/>");
//gets our app secret from the config value.
Response.Write("php sdk equivalent $facebook->getApiSecret();" + client.getApiSecret() + "<br/>");
//gets our app id from the config value.
Response.Write("php sdk equivalent $facebook->getAppId();" + client.getAppId() + "<br/>");
//gets our login url with permissions we defined in loginPrms variable. getLoginStatusUrl is basically a wrapper for getLoginUrl.
Response.Write("php sdk equivalent $facebook->getLoginStatusUrl();" + client.getLoginStatusUrl(loginPrms) + "<br/>");
Response.Write("php sdk equivalent $facebook->getLoginUrl();" + client.getLoginUrl(loginPrms) + "<br/>");
//retrieves the signed_request post value from facebook in our application and retrieves a Dictionary<string, object>.
//for more info please refer to http://developers.facebook.com/docs/reference/login/signed-request/
foreach (KeyValuePair<string, object> kvp in client.getSignedRequest())
{
//user is json object
if (kvp.Key == "user")
{
foreach (KeyValuePair<string, object> fields in client.getSignedRequest()["user"] as Dictionary<string, object>)
{
//age in user is also a json object
if(fields.Key == "age")
{
foreach (KeyValuePair<string, object> field in fields.Value as Dictionary<string, object>)
{
Response.Write("php sdk equivalent $facebook->getSignedRequest();" + field.Key + " - " + field.Value + "<br/>");
}
}
else
{
Response.Write("php sdk equivalent $facebook->getSignedRequest();" + fields.Key + " - " + fields.Value + "<br/>");
}
}
}
//page is json object
if (kvp.Key == "page")
{
foreach (KeyValuePair<string, object> fields in client.getSignedRequest()["page"] as Dictionary<string, object>)
{
Response.Write("php sdk equivalent $facebook->getSignedRequest();" + fields.Key + " - " + fields.Value + "<br/>");
}
}
else
{
Response.Write("php sdk equivalent $facebook->getSignedRequest();" + kvp.Key + " - " + kvp.Value + "<br/>");
}
}
//retrieves the signed user facebook id as ulong
Response.Write("php sdk equivalent $facebook->getUser();" + client.getUser() + "';</script>" + "<br/>");
//retrieves the fileUpload value from config
Response.Write("php sdk equivalent $facebook->useFileUploadSupport();" + client.useFileUploadSupport() + "<br/>");
//you can retrieve fql queries using fql method.
//this query retrieves current user and his /her friends uid, name, pic_square fields
Response.Write(client.fql("SELECT uid, name, pic_square FROM user WHERE uid = me() OR uid IN (SELECT uid2 FROM friend WHERE uid1 = me())") + "<br/>");
//you can also make batch fql queries and reference them. in this example we first retrieve the user list attends to a particual event in "query1"
//and then retrieve their name, url, pic fields in "query2" referencing the results in "query1"
var batchFqlQueries = new Dictionary<string, string>();
batchFqlQueries.Add("query1", "SELECT uid, rsvp_status FROM event_member WHERE eid=221426641328833");
batchFqlQueries.Add("query2", "SELECT name, url, pic FROM profile WHERE id IN (SELECT uid FROM #query1)"); //referencing #query1
Response.Write(client.fql(batchFqlQueries) + "<br/>");
//you can make simple graph api calls like in php sdk
Response.Write(client.api("/me/friends", "GET", null)); // or equivalently Response.Write(client.api("/me/friends", FacebookApiMethodType.GET, null));
//same call in more object oriented way
var graphApiCall = new FacebookGraphApiRequest();
graphApiCall.Method = FacebookApiMethodType.GET;
graphApiCall.Path = "/me";
graphApiCall.Params = null;
Response.Write(client.api(graphApiCall));
//this is an example of batch graph api request. retrieve the current user public info from /me and posts a wall post to this user's wall in one call
List<FacebookGraphApiRequest> list = new List<FacebookGraphApiRequest>();
//first request
var request = new FacebookGraphApiRequest();
request.Method = FacebookApiMethodType.GET; //or just type "GET" string like request.Method = "GET"
request.Path = "/me";
request.Params = new NameValueCollection(); // Graph api GET calls do not need parameters.
list.Add(request);
//second request is wall post.
request.Method = FacebookApiMethodType.POST; //or just type "POST" sting like request.Method = "POST"
request.Path = "/me/feed";
//we enter the wall post parameter fields link and message
// you can refer to http://developers.facebook.com/docs/reference/api/publishing/ Other Objects section
request.Params = new NameValueCollection();
request.Params.Add("link", "www.arcademonk.com");
request.Params.Add("message", "C# SDK Batch Request Messsage");
list.Add(request);
//retrieves the result from these two requests
Response.Write(client.api(list));
//you can catch all api errors using FacebookApiException class
try
{
//this user is invalid
client.api("/arcademonk.notvalid", "GET", null);
}
catch (FacebookApiException exception)
{
Response.Write(exception.Type + exception.Error);
}
}
}