我是facebook c#sdk的新手。我按照this link中的教程进行了操作。
我创建了一个在登录后显示用户名的应用程序。这是我的代码:
public partial class MainWindow : Window
{
private string appId = "appid";
private string extenededPermissions = "offline_access,publish_stream";
private Uri loginUrl = null;
private string accessToken = null;
private string userName = null;
public MainWindow()
{
InitializeComponent();
}
/// <summary>
/// Function to get the login url
/// with the requested permissions
/// </summary>
private void GetLoginUrl()
{
dynamic parameters = new ExpandoObject();
// add the client id
parameters.client_id = appId;
// add the redirect uri
parameters.redirect_uri = "https://www.facebook.com/connect/login_success.html";
// requested response
parameters.response_type = "token";
// type of display
parameters.display = "popup";
// If extended permissions are present
if (!string.IsNullOrWhiteSpace(extenededPermissions))
parameters.scope = extenededPermissions;
// Create the login url
Facebook fc = new FacebookClient();
loginUrl = fc.GetLoginUrl(parameters);
}
private void WindowLoaded(object sender, RoutedEventArgs e)
{
// get the login url
GetLoginUrl();
// Navigate to that page
webBrowser.Navigate(loginUrl);
}
private void webBrowser_Navigated(object sender, NavigationEventArgs e)
{
var fc = new FacebookClient();
FacebookOAuthResult fr;
// Check the returned url
if (fc.TryParseOAuthCallbackUrl(e.Uri, out fr))
{
// check if authentication is success or not
if (fr.IsSuccess)
{
getUserName(out userName);
}
else
{
var errorDes = fr.ErrorDescription;
var errorReason = fr.ErrorReason;
}
}
else
{
}
}
private void getUserName(out string name)
{
var fb = new FacebookClient(accessToken);
// Get the user details
dynamic result = fb.Get("me");
// Get the user name
name = result.name;
MessageBox.Show("Hai " + name + ",Welcome to my App");
}
}
我的问题在于FacebookOAuthResult
。
private void webBrowser_Navigated(object sender, NavigationEventArgs e)
{
var fc = new FacebookClient();
FacebookOAuthResult fr;
// Check the returned url
if (fc.TryParseOAuthCallbackUrl(e.Uri, out fr))
{
// check if authentication is success or not
if (fr.IsSuccess)
{
getUserName(out userName);
}
else
{
var errorDes = fr.ErrorDescription;
var errorReason = fr.ErrorReason;
}
}
else
{
}
}
登录后,重定向到redirect_uri
。但是fc.TryParseOAuthCallbackUrl(e.Uri, out fr)
失败,尽管webbrowser重定向到Authentication success页面。
所以我无法获得访问令牌。我的代码中的问题是什么?
答案 0 :(得分:1)
这不回答问题,但我发现你要求获得offline_access权限。 Facebook前一段时间删除了offline_access。相反,您需要一个扩展访问令牌。你通过交换你想要获得的访问令牌来获得它,用于扩展。它们持续约2-3个月,之后你必须得到一个新的。
答案 1 :(得分:0)
没关系我找到了解决方案。感谢question的答案!
我已将 Winforms网络浏览器控件添加到wpf并且身份验证正在运行。问题在于 WPF网络浏览器。它只是省略#token 之后的url所以parseurl将无法对其进行身份验证。
这是经过修改的代码..
private void WindowLoaded(object sender, RoutedEventArgs e)
{
// create the windows form host
System.Windows.Forms.Integration.WindowsFormsHost sample =
new System.Windows.Forms.Integration.WindowsFormsHost();
// create a new web browser
webBrowser = new System.Windows.Forms.WebBrowser();
// add it to winforms
sample.Child = webBrowser;
// add it to wpf
canvas1.Children.Add(sample);
webBrowser.Navigated += webBrowser_Navigated;
webBrowser.Navigate(loginURL);
}
void webBrowser_Navigated(object sender, WebBrowserNavigatedEventArgs e)
{
// do the authentication
var fc = new FacebookClient();
FacebookOAuthResult fr;
// Check the returned url
if (fc.TryParseOAuthCallbackUrl(e.Url, out fr))
{
// check if authentication is success or not
if (fr.IsSuccess)
{
accessToken = fr.AccessToken;
// Actions to do
}
else
{
var errordes = fr.ErrorDescription;
var errorreason = fr.ErrorReason;
}
}
else
{
//Not a valid url
}
}
问题解决了!!