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Use the IPagePreRenderCompleteEvent

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You can manipulate the ASP.NET Page object, for example to add meta-attributes to the head tag, using the IPagePreRenderCompleteEvent.

The following code sample demonstrates how to use the IPagePreRenderCompleteEvent:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web.UI.HtmlControls;
using Telerik.Sitefinity.Abstractions;
using Telerik.Sitefinity.Model;
using Telerik.Sitefinity.Services;
using Telerik.Sitefinity.Web.Events;
namespace SitefinityWebApp
{
public class Global : System.Web.HttpApplication
{
public class FacebookMeta : HtmlMeta
{
public FacebookMeta(string propName, string content)
: base()
{
this.Attributes.Add("property", propName);
this.Content = content;
}
}
protected void Application_Start(object sender, EventArgs e)
{
Bootstrapper.Bootstrapped += Bootstrapper_Bootstrapped;
}
private void Bootstrapper_Bootstrapped(object sender, EventArgs e)
{
EventHub.Subscribe<IPagePreRenderCompleteEvent>((x) =>
{
if (!x.PageSiteNode.IsBackend)
{
var page = x.Page;
var siteNode = x.PageSiteNode;
//add custom class to body tag
var customClass = siteNode.GetCustomFieldValue("BodyClass");
var script = @"$(""body"").addClass(""{0}"");".Arrange(customClass);
page.ClientScript.RegisterStartupScript(typeof(Global), "custom", script, true);
//facebook meta graph
page.Header.Controls.Add(new FacebookMeta("og:title", siteNode.Title));
page.Header.Controls.Add(new FacebookMeta("og:site_name", "yourite.com"));
page.Header.Controls.Add(new FacebookMeta("og:description", siteNode.Description));
var images = siteNode.GetCustomFieldValue("Image") as IList<IDataItem>;
var image = images.FirstOrDefault() as Telerik.Sitefinity.Libraries.Model.Image;
if (image == null)
page.Header.Controls.Add(new FacebookMeta("og:image", ""));
else
page.Header.Controls.Add(new FacebookMeta("og:image", image.Url));
}
});
}
}
}
view raw FacebookMeta_Bootstrapped_Global.asax.cs hosted with ❤ by GitHub

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