Boutons .NET UpdatePanel et FaceBook/Twitter

Question

J'ai un UpdatePanel qui a un gridview à l'intérieur. Sur chacun des gridviewrows, dans le gridview, j'ai un bouton Twitter et FaceBook. Le gridview rend très bien avec les boutons sur le chargement de la page, cependant, une fois qu'une publication partielle est effectuée sur le panneau de mise à jour les boutons Twitter et FaceBook ne rendent pas.

<asp:UpdatePanel ID="UpdatePanel1" runat="server"> 
     <ContentTemplate> 
<!-- search controls.... --> 
<asp:ImageButton ID="btnSearch" ImageUrl="~/img/button-search.gif" runat="server" /> 

<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" EnableModelValidation="True" 
       BorderStyle="None" Font-Size="Small" GridLines="None" AllowPaging="True" ShowFooter="True" 
       Width="100%" OnPageIndexChanging="GridView1_PageIndexChanging"> 
       <RowStyle CssClass="row1" /> 
       <AlternatingRowStyle CssClass="row2" /> 
       <Columns> 
        <asp:TemplateField> 
         <ItemTemplate> 
          ... 
        <asp:TemplateField> 
         <ItemTemplate> 
          <asp:Literal ID="ltlTwitter" runat="server" Text='<%# GetTwitterURL(Eval("ID"), Eval("SomeText")) %>'></asp:Literal> 
         </ItemTemplate> 
        </asp:TemplateField> 
        <asp:TemplateField> 
         <ItemTemplate> 
          <asp:Literal ID="ltlFacebook" runat="server" Text='<%# GetFacebookURL(Eval("ID")) %>'></asp:Literal> 
         </ItemTemplate> 
        </asp:TemplateField> 
        <asp:BoundField DataField="ID" HeaderText="ID" SortExpression="ID" Visible="False" /> 
       </Columns> 
       <EmptyDataTemplate> 
        <strong>There are no offers for this search criteria.</strong> 
       </EmptyDataTemplate> 
      </asp:GridView> 
</ContentTemplate> 
     <Triggers> 
      <asp:PostBackTrigger ControlID="btnSearch" /> 
     </Triggers> 
    </asp:UpdatePanel> 

pertinente C#:

public static string GetTwitterURL(object ID, object text) 
{ 
    ...   
    StringBuilder sb = new StringBuilder(); 
    sb.Append("<div>"); 
    sb.Append("<a href=\"http://twitter.com/share\" " + 
     "class=\"twitter-share-button\" "); 
    sb.AppendFormat("data-url=\"{0}?ID={1}\" ", obj.Property, oID.ToString()); 
    sb.Append("data-via=\"xxx\" "); 
    sb.AppendFormat("data-text=\"{0}\"", xxx); 
    sb.Append("data-count=\"none\">Tweet</a>"); 

    sb.Append("</div>"); 

    return sb.ToString(); 

} 

public static string GetFacebookURL(object OfferID) 
{ 
    ... 

    return string.Format("<fb:like href=\"{0}?ID={1}\" " + 
     "send=\"false\" layout=\"button_count\" show_faces=\"false\" " + 
     "action=\"like\" font=\"tahoma\"></fb:like>", obj.Property, someInt); 
} 

En outre, la page en question est une page enfant d'une page maître.

Voici le code-behind supplémentaires:

protected void Page_Load(object sender, EventArgs e) 
{ 
    if (!IsPostBack) 
    { 
     this.BindOffersGrid(true); 
    } 
} 

public List<Offer> CurrentOffersDataSet 
{ 
    get 
    { 
     object o = ViewState["CurrentOfferDataSet"]; 
     return (o == null ? new List<Offer>() : (List<Offer>)o); 
    } 
    set 
    { 
     ViewState["CurrentOfferDataSet"] = value; 
    } 
} 

protected void GridView1_PageIndexChanging(object sender, GridViewPageEventArgs e) 
{ 
    GridView1.PageIndex = e.NewPageIndex; 
    GridView1.DataSource = this.CurrentOffersDataSet; 
    GridView1.DataBind(); 
} 

private void BindOffersGrid(bool ApplyRandomSort) 
{ 
    List<Offer> lstOffers = Offers.GetAllBySearchCriteria(
     Convert.ToInt32(ddlOfferCounty.SelectedValue), 
     Convert.ToInt32(ddlOfferTypes.SelectedValue), 
     Convert.ToDateTime(ddlOfferDate.SelectedValue), -1, true); 

    ... 
    //Some filtering of the dataset with Linq 
    ... 

    GridView1.DataSourceID = string.Empty; 
    this.CurrentOffersDataSet = lstFilteredOffers. 
     OrderByDescending(a => a.IsExclusive). 
     ThenBy(a => Guid.NewGuid()). 
     ToList(); 
    GridView1.DataSource = this.CurrentOffersDataSet; 
    GridView1.DataBind(); 
} 

Answer 1

Ok, j'ai ajouté le code suivant à la fin de ma page enfant et maintenant le Twitter et Facebook comme le bouton apparaissent après postbacks partielles.

<script type="text/javascript"> 

     var prm = Sys.WebForms.PageRequestManager.getInstance(); 
     prm.add_pageLoaded(pageLoaded); 

     var _panels, _count; 

     function pageLoaded(sender, args) { 
      if (_panels != undefined && _panels.length > 0) { 
       for (i = 0; i < _panels.length; i++) 
        _panels[i].dispose(); 
      } 

      var panels = args.get_panelsUpdated(); 

      if (panels.length > 0) { 

       updateFbLike(); 
      } 
     } 

     function updateFbLike() { 
      $.getScript("http://platform.twitter.com/widgets.js"); 
      FB.XFBML.parse(); 
     } 


    </script>