使用 asp.net C# sdk 的 facebook 中仅限粉丝的内容 [英] Fans-only content in facebook with asp.net C# sdk

问题描述

我正在用 c# sdk 在 facebook 中开发一个应用程序，我希望喜欢我页面的用户只能使用我的应用程序.(比如woobox)

Hi i'm developing an application in facebook with c# sdk and i want that the user whom liked my page can only use my application. (Like woobox)

我在 此链接 中找到了一些 php 解决方案，但没有关于 .net 的源我如何在 ASP.NET 中获得喜欢的信息

I found some solutions in php in this link but there isn't any source about .net how can i get the liked info in ASP.NET

我在 this 再次链接，但我找不到 c# 答案:

I find another examples in php in this link again but i can't find c# answer :

谢谢

推荐答案

当您的网页在 facebook 画布应用程序中加载时，您会收到签名请求；您应该能够解析类似于以下内容的签名请求:

You get signed request when your web page is loaded within facebook canvas app; you should be able to parse signed request something similar to following:

if (Request.Params["signed_request"] != null)
{
    string payload = Request.Params["signed_request"].Split('.')[1];
    var encoding = new UTF8Encoding();
    var decodedJson = payload.Replace("=", string.Empty).Replace('-', '+').Replace('_', '/');
    var base64JsonArray = Convert.FromBase64String(decodedJson.PadRight(decodedJson.Length + (4 - decodedJson.Length % 4) % 4, '='));
    var json = encoding.GetString(base64JsonArray);
    var o = JObject.Parse(json);
    var lPid = Convert.ToString(o.SelectToken("page.id")).Replace(""", "");
    var lLiked = Convert.ToString(o.SelectToken("page.liked")).Replace(""", "");
    var lUserId= Convert.ToString(o.SelectToken("user_id")).Replace(""", "");
}

您需要添加对 json 库的引用才能在 C# 中解析签名请求，请从 http://json 下载.codeplex.com/

You need to add reference to json libraries in order to parse signed requestin C#, download from http://json.codeplex.com/

另请参阅如何为 C# 中的 Canvas 签名请求解码 OAuth 2.0? 如果您对签名请求感到厌烦.

Also refere to How to decode OAuth 2.0 for Canvas signed_request in C#? if you are worndering about signed request.

这篇关于使用 asp.net C# sdk 的 facebook 中仅限粉丝的内容的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！