facebook share with listview

using ASPSnippets.FaceBookAPI;
using System;
using System.Collections.Generic;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

public partial class testingfacebook : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        FaceBookConnect.API_Key = ConfigurationManager.AppSettings["1521040144856517"];
        FaceBookConnect.API_Secret = ConfigurationManager.AppSettings["f306282212453f2f294bcac760096fc"];
        if (!IsPostBack)
        {
            if (Request.QueryString["login"] == "1")
            {
                FaceBookConnect.Authorize("publish_actions", Request.Url.AbsoluteUri.Split('?')[0]);
                return;
            }
            if (Request.QueryString["code"] != null)
            {
                Session["Code"] = Request.QueryString["code"];
                ClientScript.RegisterStartupScript(GetType(), "script", "window.opener.location.reload(); window.close();", true);
                return;
            }
            if (Session["Code"] != null)
            {
                imgFaceBook.AlternateText = "share";
                imgFaceBook.ImageUrl = "~/img/fbshare.png";
            }
            LoadImages();
        }
    }

    protected void ShareImage(object sender, EventArgs e)
    {
        string imageUrl = Request.Form["image_url"];
        Dictionary<string, string> data = new Dictionary<string, string>();
        data.Add("link", imageUrl);
        data.Add("picture", imageUrl);
        FaceBookConnect.Post(Session["Code"].ToString(), "me/feed", data);
        ClientScript.RegisterStartupScript(GetType(), "alert", "alert('Image has been shared.');", true);
    }

    private void LoadImages()
    {
        DataTable dt = new DataTable();
        dt.Columns.Add("ImageUrl", typeof(string));
        dt.Rows.Add("http://farm4.staticflickr.com/3792/9147205860_5da6951bf4_m.jpg");
        dt.Rows.Add("http://farm9.staticflickr.com/8380/8474516903_8a5eb01b51_m.jpg");
        dt.Rows.Add("http://farm9.staticflickr.com/8395/8985239089_4318196db2_m.jpg");
        dt.Rows.Add("http://farm4.staticflickr.com/3723/8986453414_a869ddc3aa_m.jpg");
        this.dlImages.DataSource = dt;
        this.dlImages.DataBind();
    }
}

<%@ Page Title="" Language="C#" MasterPageFile="~/Site.master" AutoEventWireup="true" CodeFile="testingfacebook.aspx.cs" Inherits="testingfacebook" %>

<asp:Content ID="Content1" ContentPlaceHolderID="MainContent" Runat="Server">

    <style type="text/css">
        .info
        {
            background-color: black;
            filter: alpha(opacity=80);
            opacity: 0.8;
            position: absolute;
            display: block;
            text-align: center;
        }
        .info input
        {
            position: relative;
            top: 35px;
        }
    </style>
    <script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>
    <script type="text/javascript">
        $(function () {
            var info = $(".info");
            $(".picture").bind("mouseenter", function () {
                var p = GetScreenCordinates(this);
                $("input", info).attr("rel", this.src);
                info.show();
                info.css("height", $(this)[0].offsetHeight / 2);
                info.css("width", $(this).width());
                info.css({ "left": p.x, "top": p.y + this.offsetHeight - info[0].offsetHeight });
            });
            $(".info a, .info").bind("mouseenter, mousemove, mouseover", function () {
                info.show();
            });
            $(".picture").bind("mouseleave", function () {
                info.hide();
            });
            $("[id*=imgFaceBook]").bind("click", function () {
                if (this.alt == "login") {
                    window.open("testingfacebook.aspx?login=1", "LoginPopup", "width=550,height=300,resizable=1");
                    return false;
                }
                var hidden = $("<input name = 'image_url' type = 'hidden' />");
                hidden.val($(this).attr("rel"));
                $("form").append(hidden);
            });
        });
 
        function GetScreenCordinates(obj) {
            var p = {};
            p.x = obj.offsetLeft;
            p.y = obj.offsetTop;
            while (obj.offsetParent) {
                p.x = p.x + obj.offsetParent.offsetLeft;
                p.y = p.y + obj.offsetParent.offsetTop;
                if (obj == document.getElementsByTagName("body")[0]) {
                    break;
                }
                else {
                    obj = obj.offsetParent;
                }
            }
            return p;
        }
    </script>

    <asp:ListView ID="dlImages" runat="server">
        <ItemTemplate>
            <img src="<%#Eval("ImageUrl") %>" class="picture" alt="" height="200" width="200" />
        </ItemTemplate>
    </asp:ListView>
    <div class="info" style="display: none">
        <asp:ImageButton ID="imgFaceBook" AlternateText="login" ImageUrl="~/img/fbLogin.jpg"
            runat="server" OnClick="ShareImage"></asp:ImageButton>
    </div>
</asp:Content>