從ASP.NET網站發布到Facebook頁面

Question

如何從asp.net網站在Facebook頁面的牆上發布內容。

Google搜索說我必須創建一個應用程序才能做到這一點。 是否可以在不創建應用的情況下發布到Facebook牆？

不知道從哪里開始。 我嘗試了developers.facebook.com和csharpsdk.org。 運氣不好。 有例子嗎？ 或使用圖形API的教程？

Answer 1

在FB上創建一個APP是FB接受您的帖子的最低要求。 你在問什么沒有多大意義。 想象一下，如果有人可以將內容發布到FB，我們可能不會在這里討論此問題（到現在它已經死了，很高興它是如此）我建議您閱讀這些鏈接以快速入門。

• FB API一般： http ： //developers.facebook.com/docs/reference/javascript/FB.api/
• C＃SDK： http ： //developers.facebook.com/blog/post/395/
• 圖表Api： http : //developers.facebook.com/docs/reference/api/

希望這能提供一些起點。 祝好運

Answer 2

在Facebook中創建應用程序內容並獲取唯一的應用程序ID和密碼后，請使用以下代碼（后面的代碼）

using System;
using System.Collections.Generic;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Globalization;
using System.IO;
using System.Net;
using System.Runtime.Serialization.Json;
using System.Web.Security;
using System.Xml;
using System.Collections.Specialized;

namespace WebApplication1
{
    public partial class _Default : System.Web.UI.Page
    {
        readonly static string myurl = "your url";
        readonly static string App_ID = "Your application id";
        readonly static string App_Secret = "your secret code";
        readonly static string scope = "email";
        FacebookUser me;
        readonly static DataContractJsonSerializer userSerializer = new DataContractJsonSerializer(typeof(FacebookUser));


        protected void Page_Load(object sender, EventArgs e)
        {
            if (Session["code"] == null)
            {
                fbLogin.Visible = true;
            }
            else
            {
                fbLogin.Visible = false;
            }
        }


        protected override void OnLoad(EventArgs e)
        {
            base.OnLoad(e);
            if ((!IsPostBack) || Session["code"] == null)
            {
                string code = Request.QueryString["code"];
                if (code == null)
                {
                    Session["code"] = null;
                }
                else
                {
                    Session["code"] = code;

                   // oAuth = new oAuthFacebook();
                   //// oAuthFacebook oFB = new oAuthFacebook();
                   // //Response.Redirect(oFB.AuthorizationLinkGet());
                   // oAuth.AccessTokenGet(Request["code"]);
                   // if (oAuth.Token.Length > 0)
                   // {
                   //     //We now have the credentials, so we can start making API calls
                   //     string url = "https://graph.facebook.com/me/likes?access_token=" + oAuth.Token;
                   //     string json = oAuth.WebRequest(oAuthFacebook.Method.GET, url, String.Empty);
                   // } 


                }


                string error_description = Request.QueryString["error_description"];
                string originalReturnUrl = Request.QueryString["ReturnUrl"]; // asp.net logon param
                Uri backHereUri = Request.Url; // modify for dev server
                if (!string.IsNullOrEmpty(code)) // user is authenticated
                {
                    me = GetUserDetails(code, backHereUri);
                    FormsAuthentication.SetAuthCookie(me.email, false); // authorize!
                    if (!string.IsNullOrEmpty(originalReturnUrl))
                        Response.Redirect(originalReturnUrl);
                }
                if (!string.IsNullOrEmpty(error_description)) // user propably disallowed
                {
                    OnError(error_description);
                }

                fbLogin.Visible = !User.Identity.IsAuthenticated;

                if (string.IsNullOrEmpty(code))
                {
                    fbLogin.Visible = true;
                    LoginName1.Visible = false;
                }
                else
                {
                    fbLogin.Visible = false;
                    LoginName1.Visible = true;
                    LoginName1.Text = "User Email: " + me.email.ToString() + " Name: " + me.first_name.ToString() + " Sname: " + me.last_name.ToString() + " Verified: " + me.verified.ToString();
                }

                fbLogin.NavigateUrl = string.Format(
                    CultureInfo.InvariantCulture,
                    "https://www.facebook.com/dialog/oauth?"
                    + "client_id={0}&scope={1}&redirect_uri={2}",
                    App_ID,
                    scope,
                    Uri.EscapeDataString(backHereUri.OriginalString));
            }

        }

        FacebookUser GetUserDetails(string code, Uri backHereUri)
        {
            Uri getTokenUri = new Uri(
                string.Format(
                CultureInfo.InvariantCulture,
                "https://graph.facebook.com/oauth/access_token?"
                + "client_id={0}&client_secret={1}&code={2}&redirect_uri={3}",
                App_ID,
                App_Secret,
                Uri.EscapeDataString(code),
                Uri.EscapeDataString(backHereUri.OriginalString))
                );
            using (var wc = new WebClient())
            {
                string token = wc.DownloadString(getTokenUri);
                Session["token"] = token;
                Uri getMeUri = new Uri(
                    string.Format(
                    CultureInfo.InvariantCulture,
                    "https://graph.facebook.com/me?{0}",
                    token)
                    );
                using (var ms = new MemoryStream(wc.DownloadData(getMeUri)))
                {
                    var me = (FacebookUser)userSerializer.ReadObject(ms);
                    return me;
                }
            }
        }

        void OnError(string error_description)
        {
            Controls.Add(new Label()
            {
                CssClass = "oauth-error",
                Text = error_description
            }
            );
        }

        [Serializable]
        class FacebookUser
        {
            public long id;
            public string name;
            public string first_name;
            public string last_name;
            public string link;
            public string email;
            public string timezone;
            public string locale;
            public bool verified;
            public string updated_time;
        }



        protected void Button1_Click(object sender, EventArgs e)
        {
            XmlDocument doc = new XmlDocument();
            WebRequest req = WebRequest.Create("https://api.facebook.com/restserver.php?method=links.getStats&urls=http://localhost:5064/default.aspx,http://www.facebook.com");
            WebResponse resp = req.GetResponse();
            StreamReader reader = new StreamReader(resp.GetResponseStream());
            string xml = reader.ReadToEnd();
            xml = xml.Replace("<?xml version=\"1.0\" encoding=\"UTF-8\"?>", "").Replace("links_getStats_response xmlns=\"http://api.facebook.com/1.0/\" xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" xsi:schemaLocation=\"http://api.facebook.com/1.0/ http://api.facebook.com/1.0/facebook.xsd\" list=\"true\"", "links_getStats_response"); 
            doc.LoadXml(xml);

            XmlNodeList xnList = doc.SelectNodes("links_getStats_response/link_stat");
            foreach (XmlNode xn in xnList)
            {
                string fullurls = xn["url"].InnerText;
                string likes = xn["like_count"].InnerText;
                string comment = xn["comment_count"].InnerText;
                string normalisedurls = xn["normalized_url"].InnerText;

            }

        }



public string WebRequests(string method, string url, string postData)
{

HttpWebRequest webRequest = null;
StreamWriter requestWriter = null;
string responseData = "";

webRequest = System.Net.WebRequest.Create(url) as HttpWebRequest;
webRequest.Method = method.ToString();
webRequest.ServicePoint.Expect100Continue = false;
webRequest.UserAgent = HttpContext.Current.Request.UserAgent; 
webRequest.Timeout = 20000;
if (method == "POST")
{
webRequest.ContentType = "application/x-www-form-urlencoded";
//POST the data.
requestWriter = new StreamWriter(webRequest.GetRequestStream());
try
{
requestWriter.Write(postData);
}
catch
{
throw;
}
finally
{
requestWriter.Close();
requestWriter = null;
}
}

responseData = WebResponseGet(webRequest);
webRequest = null;
return responseData;
}

public string WebResponseGet(HttpWebRequest webRequest)
{
StreamReader responseReader = null;
string responseData = "";

try
{
responseReader = new StreamReader(webRequest.GetResponse().GetResponseStream());
responseData = responseReader.ReadToEnd();
}
catch
{
throw;
}
finally
{
webRequest.GetResponse().GetResponseStream().Close();
responseReader.Close();
responseReader = null;
}

return responseData;
}



protected void Button2_Click(object sender, EventArgs e)
{
    if (Session["code"] != null)
    {
        string urls = "https://graph.facebook.com/me/feed?" + Session["token"];
        var json = WebRequests("POST", urls, "message=" + HttpUtility.UrlEncode("" + TextBox1.Text));
    }
}





    }
}


AND for default.aspx


<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="WebApplication1._Default" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
    <asp:HyperLink runat="server" Text="Log in with Facebook" id="fbLogin"/><br /><br />

        <asp:Label ID="LoginName1" runat="server" Text="" Font-Bold="true"></asp:Label>
        <br />
        <br />
<asp:Button ID="Button1" runat="server" Text="Get Likes And Comments" onclick="Button1_Click" />
        <br />
        <asp:TextBox ID="TextBox1" runat="server" Width="407px" Text="Testing Api by c# code"></asp:TextBox>
        <asp:Button ID="Button2" runat="server" Text="Post To me" 
            onclick="Button2_Click" />
    </div>

    </form>

</body>
</html>

希望能有所幫助