如何在v5中使用CanvasAuthorizer.GetLoginUrl？

Question

我正在尝试将我的ASP.NET WebForms IFrame Canvas应用程序从Facbook C＃SDK 4.02升级到5.03 beta。大多数变化都相当直接。但是，我对CanvasAuthorizer.GetLoginUrl（）并不是100％肯定。

这是我的v4.02代码

CanvasAuthorizer _authorizer = new CanvasAuthorizer {Perms = "publish_stream,offline_access"};

Uri authurl = _authorizer.GetLoginUrl(new HttpRequestWrapper(Request));
CanvasRedirect(authurl.ToString());

根据http://developers.facebook.com/docs/reference/dialogs/oauth上的php示例，这是我对v5.03的最佳猜测

CanvasAuthorizer _authorizer = new CanvasAuthorizer {Perms = "publish_stream,offline_access"};

Dictionary<string, object> parameters =
    new Dictionary<string, object>
        {
            {"scope", _authorizer.Perms},
            {"client_id", _authorizer.AppId},
            {"redirect_uri", _authorizer.ReturnUrlPath},
            {"response_type", "token"}
        };
Uri authurl = _authorizer.GetLoginUrl(parameters);
CanvasRedirect(authurl);

这会有用吗？有更好的方法吗？

Answer 1

经过一些反复试验，我使用以下方法让它工作：

CanvasAuthorizer _authorizer = new CanvasAuthorizer {Perms = "publish_stream,offline_access"};
if (!_authorizer.IsAuthorized())
{
    _authorizer.HandleUnauthorizedRequest();
}