FacebookNET Work Item Rss Feed

Commented Issue: FacebookRequest.cs:line 180 - Unable to cast object of type 'System.Int32' to type 'System.String'. [6839]

wgraham — Thu, 15 Jul 2010 01:44:05 GMT

I downloaded the binaries 0.3.0.0 and got this error... the downloaded the source, and got the very same error...
Recompiled for .Net 3.5, same error... I'm using the Samples/HelloWorldFBML sample.
So far, I traced this to the UserID string returned by Facebook. Am I doing something wrong or this is a known bug? If it is, anybody knows a workaround?
Error transcript follows:

Exception Information

Unable to cast object of type 'System.Int32' to type 'System.String'.

at Facebook.Service.Core.FacebookRequest.CreateSession(String authToken, String& userID, Boolean& expires, String& secret) in \Facebook.NET\Framework\Service\Core\FacebookRequest.cs:line 180
at Facebook.Web.FacebookFbmlSession.Initialize(HttpContext context) in \Facebook.NET\FrameworkWeb\Web\FacebookFbmlSession.cs:line 44
at Facebook.Web.FacebookApplication.OnPagePreLoad(Object sender, EventArgs e) in \Facebook.NET\FrameworkWeb\Web\FacebookApplication.cs:line 581
at System.Web.UI.Page.OnPreLoad(EventArgs e)
at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
Comments: ** Comment from web user: wgraham **

Confirming Peter's fix.

Created Issue: Not able to get uid while Third party cookies disabled [10061]

shaanlove — Mon, 25 Jan 2010 07:05:32 GMT

I am not able to get Userid while i am disable third party cookies.

Created Issue: localization change by Facebook affecting API calls to restserver.php

mtrainer — Wed, 26 Aug 2009 02:39:05 GMT

With the recent additional of support for localization by the Facebook API per [http://wiki.developers.facebook.com/index.php/Push_Changes_-_Aug_25_2009], there have been several reports that this is failing with this library. Namely, in several places the library assumes that certain string values will be returned (like 'male' and 'female'). To reproduce, create a Facebook application using this framework, and publish it in a non- US English locale through the Translations application at facebook.com/translations. After this, any user browsing the application in said locale will experience the issues.

To fix the issue, the library should be patched to avoid dependencies on particular strings in order to convert the values to enumerations, and instead act in a locale-independent manner.

Commented Issue: Changeset 12819 - Broken Redirect?

jytu — Fri, 10 Jul 2009 10:25:14 GMT

Trying the recent check in.

Noticed that redirect has an error if a user is not logged in.

Error:

Object reference not set to an instance of an object.

at Facebook.Web.FacebookApplication.Redirect(String url, Boolean detectRelativeUrl)
at Facebook.Web.FacebookApplication.OnPagePreLoad(Object sender, EventArgs e)
at System.Web.UI.Page.OnPreLoad(EventArgs e)
at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)

In VS.NET debug, it breaks around here:

private void Redirect(string url, bool detectRelativeUrl) {
Debug.Assert(String.IsNullOrEmpty(url) == false);

**** breaks here **** >>> if (_session.SessionType == FacebookSessionType.PresencePage) {
int queryIndex = url.IndexOf('?');
url += (queryIndex >= 0) ? "&" : "?";
url += "fb_page_id=" + UserID;
}
Comments: ** Comment from web user: jytu **

I've go the same problem today. I use 3.0.0 facebooknet

Commented Issue: Exception - Unable to cast object of type 'System.Int32' to type 'System.String'.

jytu — Thu, 09 Jul 2009 14:12:49 GMT

When I run the application with Canvas URL like (http://apps.facebook.com/application_name ) - it works fine, but with I use Canvas Callback URL (direct link to the web site ) - it fails.

Exception Information

Unable to cast object of type 'System.Int32' to type 'System.String'.
at Facebook.Service.Core.FacebookRequest.CreateSession(String authToken, String& userID, Boolean& expires, String& secret)
at Facebook.Web.FacebookFbmlSession.Initialize(HttpContext context)
at Facebook.Web.FacebookApplication.OnPagePreLoad(Object sender, EventArgs e)
at System.Web.UI.Page.OnPreLoad(EventArgs e)
at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)

Please help me to resolve this issue.
Comments: ** Comment from web user: jytu **

Please help me to resolve this issue.

Commented Issue: Exception - Unable to cast object of type 'System.Int32' to type 'System.String'.

jytu — Wed, 08 Jul 2009 13:43:39 GMT

Please help me to resolve this issue.

Commented Issue: Exception - Unable to cast object of type 'System.Int32' to type 'System.String'.

jytu — Fri, 26 Jun 2009 15:36:31 GMT

Hello. Still can't fine the solution of this problem

Commented Issue: Exception - Unable to cast object of type 'System.Int32' to type 'System.String'.

jytu — Wed, 17 Jun 2009 10:22:22 GMT

Please help me to resolve this issue.

Commented Issue: Exception - Unable to cast object of type 'System.Int32' to type 'System.String'.

mitopoker — Fri, 05 Jun 2009 14:12:27 GMT

i have the same problem

Created Issue: Exception - Unable to cast object of type 'System.Int32' to type 'System.String'.

jytu — Fri, 05 Jun 2009 10:47:12 GMT

Created Issue: Error in tab: fb:redirect: redirect forbidden by flavor TabFBMLFlavor

cmoya — Thu, 26 Feb 2009 04:28:58 GMT

Apparently Facebook.NET apps don't play nice in the Facebook profile tabs. After figuring out that iFrame app wouldn't work in a user's profile tabs, I decided to try and do it the FBML way. However, the error above is spat out when you switch to the tab containing the FBML page.

From some research it seems this is due to Require_Login function being called.... which is unnecessary in a tab page. But, I can't figure out how to turn this off. The Dev Toolkit (which I hate) has an option to turn off Require_Login. How do I accomplish the same thing here.

Commented Issue: FacebookRequest.cs:line 180 - Unable to cast object of type 'System.Int32' to type 'System.String'.

cmoya — Thu, 26 Feb 2009 04:24:33 GMT

Make sure your CallBack URL, etc have a trailing slash. This solved the problem for me.

Commented Issue: FacebookRequest.cs:line 180 - Unable to cast object of type 'System.Int32' to type 'System.String'.

RangerPT — Fri, 23 Jan 2009 16:09:39 GMT

Make the change here:
\Framework\Service\Core\FacebooRequest.cs Line 180

Commented Issue: FacebookRequest.cs:line 180 - Unable to cast object of type 'System.Int32' to type 'System.String'.

mkagan — Thu, 22 Jan 2009 22:27:21 GMT

Where exactly did you make that change in the code?

Thanks,
Marc

Commented Issue: FacebookRequest.cs:line 180 - Unable to cast object of type 'System.Int32' to type 'System.String'.

pmscheffler — Thu, 22 Jan 2009 13:10:06 GMT

There is a bug in the code. You need to explicitly cast the userid. I came across this myself a couple weeks back.

Here's how I fixed it:
userID = result["uid"].ToString();

I did that a few weeks ago and haven't seen an issue since.

Peter

Commented Issue: FacebookRequest.cs:line 180 - Unable to cast object of type 'System.Int32' to type 'System.String'.

mkagan — Wed, 21 Jan 2009 21:20:44 GMT

I am also having this problem. Has anyone found a resolution?

Thanks,
Marc

Commented Issue: FacebookRequest.cs:line 180 - Unable to cast object of type 'System.Int32' to type 'System.String'.

mpsundar — Mon, 22 Dec 2008 10:02:56 GMT

Please check the link below
http://developers.facebook.com/news.php?blog=1&story=45
which could be the reason for the problem.

Commented Issue: FacebookRequest.cs:line 180 - Unable to cast object of type 'System.Int32' to type 'System.String'.

mpsundar — Mon, 22 Dec 2008 09:57:20 GMT

Hi All,
I am also facing the same problem with the dll. This was working fine till last week and when the new UI in facebook came up for creating the application this problem has started. Please let me know what can be done to resolve this issue. As far as I think it should be the problem with the dll we need to modify the source code. Please help

Thanks in advance.

Phani...

Created Issue: FacebookRequest.cs:line 180 - Unable to cast object of type 'System.Int32' to type 'System.String'.

OBeron — Sun, 21 Dec 2008 00:56:58 GMT

Created Issue: Unable to Debug

mpsundar — Fri, 19 Dec 2008 07:23:38 GMT

Hi All,
I have been developing an application in Facebook using the dll. I am half way through my application. All of a sudden I am not able to debug using Visual Studio. I tried in VS2005 and VS2008 and having the same problems. Can any help me out in resolving this issue.

Thanks ,
Phani...