只有风扇的内容在Facebook与asp.net C＃sdk [英] Fans-only content in facebook with asp.net C# sdk

问题描述

你好，我正在用c＃sdk在Facebook上开发应用程序，我希望喜欢我的页面的用户只能使用我的应用程序。 （像 woobox ）

我在php中找到了一些解决方案此链接，但没有关于.net的任何来源我如何获得喜欢ASP.NET中的信息

我在链接，但我找不到c＃的答案：\

谢谢

解决方案

当您的网页加载到Facebook画布应用程序中时，您将获得签名请求;您应该可以解析签名请求类似于以下内容：

  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（' - '，'+'）替换（'_'，'/'）; 
 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））替换（\，）; 
} 
  / pre> 
 
 
您需要添加对json库的引用才能解析C＃中的签名请求，从 http://json.codeplex.com/  
 
 
 
还查看如何在C＃？中解码Canvas signed_request的OAuth 2.0？关于签名请求。
 
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) 

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 

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

Thanks
解决方案
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("\"", "");
}
You need to add reference to json libraries in order to parse signed requestin C#, download from http://json.codeplex.com/

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

                        
这篇关于只有风扇的内容在Facebook与asp.net C＃sdk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！