登录注销后使用Facebook的问题 [英] Login using Facebook Problem after logging out

问题描述

我使用Facebook的SDK和Facebook连接集成到FB使用asp.net和c＃我的网站。用户可以登录使用code成功。我所面临的问题是，只要用户在直通fb的记录;如果用户从Facebook的网站注销，然后尝试使用FB连接通过我的网站登录，提示错误：会话无效，因为用户注销

我要再次提供Facebook的连接按钮登录因为它最初但它给错误。使用的code如下：

 保护无效的Page_Load（对象发件人，EventArgs的发送）
{
        如果（！Page.IsPostBack）
        {
            如果（ConnectAuthentication.isConnected（））
            {
                Facebook.Session.ConnectSession _connectSession =新Facebook.Session.ConnectSession（ConfigurationManager.AppSettings [ApiKey]，ConfigurationManager.AppSettings [AppSecret]）;
                如果（！_connectSession.IsConnected（））
                {
                    lblStatus.Text =请登录与Facebook。
                }
                其他
                {
                    Facebook.Rest.Api API =新Facebook.Rest.Api（_connectSession）;                    Facebook.Schema.user用户= api.Users.GetInfo（）;
                    字符串全名= user.first_name ++ user.last_name;
                    lblStatus.Text =全名;
                }
            }
            其他
            {
                lblStatus.Text =请登录与Facebook。
            }
        }
}
 

解决方案

当用户注销会话无效。你需要让用户再次登录。如果你不想这样做，那么请验证过程中要求offline_access扩展权限。这种方式，用户不必是已登录

仅供参考，你将不得不转移到OAuth 9月1日2011年的Facebook之前只支持后OAuth的。

I am using facebook sdk and facebook connect for integrating fb into my site using asp.net and c#. The user can login using the code successfully. The problem that I face is that whenever a user is logged in thru fb; if the user logs out from the facebook's site and then tries to login through my site using fb connect, it gives error: The session is invalid because the user logged out.

I should again provide the facebook connect button to log in as it does initially but it gives error. The code used is shown below:

protected void Page_Load(object sender, EventArgs e)
{
        if (!Page.IsPostBack)
        {
            if (ConnectAuthentication.isConnected())
            {
                Facebook.Session.ConnectSession _connectSession = new Facebook.Session.ConnectSession(ConfigurationManager.AppSettings["ApiKey"], ConfigurationManager.AppSettings["AppSecret"]);
                if (!_connectSession.IsConnected())
                {
                    lblStatus.Text = "Please sign-in with Facebook.";
                }
                else
                {
                    Facebook.Rest.Api api = new Facebook.Rest.Api(_connectSession);

                    Facebook.Schema.user user = api.Users.GetInfo();
                    string fullName = user.first_name + " " + user.last_name;
                    lblStatus.Text = fullName;
                }
            }
            else
            {
                lblStatus.Text = "Please sign-in with Facebook.";
            }
        }
}

解决方案

When a user logs out the session is invalidated. You need to have the user log in again. If you don't want to do that then please request the "offline_access" extended permission during authentication. This way the user does not have to be logged-in.

FYI, you will have to move to OAuth before September 1st 2011. Facebook will ONLY support OAuth after that.

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