From Facebook Developer Wiki

Contents 1 Tutorials 2 Libraries 3 Samples 3.1 Solution to an IE gotcha when developing Facebook App in an IFRAME 3.1.1 C# 3.1.2 VB

[edit] Tutorials

• How to write an facebook application using ASP.NET - the BEST tutorial ever written on such topic

[edit] Libraries

• .NET Facebook API Client (alpha release) - Developed by SocialCash, Demo App
• .NET: Facebook Developer Toolkit (note the showcase) - For issues and discussions about the Toolkit see the project on Codeplex. Comments about the the Dev Kit from FB users
• Facebook Developer Toolkit Addon for ASP.NET MVC
• Jay Lagorio also created a VB.NET client library. This is linked from the main developer page.
• VS.NET 2008 Starter Kit for creating Facebook applications using Facebook Developer Toolkit v2.1
• Facebook.NET: Introduction and CodePlex Project - an open source .net Facebook application framework optimized for the ASP.NET programming model - use with either C# or VB.NET.
• fbasync: An Asynchronous Facebook API for .NET designed to scale. Read the introduction blog entry.

[edit] Samples

cSharp InLine Publisher - sample May 2009 using FDT 2.0

[edit] Solution to an IE gotcha when developing Facebook App in an IFRAME

This was a very frustrating problem for us in our app Jobs (http://apps.facebook.com/getthejob).

The problem was that in IE, if a parent frame has a different domain than the child page, the session data (stored in the Session object) is not preserved as a security precaution.

Anyway, if you have this problem, the answer is available on Microsoft's website.

Simply put, in your ASP.NET page codebehind, add the following code:

[edit] C#

   protected override void OnPreRender(EventArgs e)
   {
       Response.AppendHeader("P3P", "CP=\"CAO PSA OUR\"");
       base.OnPreRender(e);
   }

[edit] VB

 Protected Overrides Sub OnPreRender(ByVal e As EventArgs)
   Response.AppendHeader("P3P", "CP=""CAO PSA OUR""")
   MyBase.OnPreRender(e)
 End Sub

This will add the right headers to every page.