Using HttpModule instead of Global.asax

How do I convert:

<%@ Application Language="C#" %>

<script runat="server">

    void Session_Start(object sender, EventArgs e) 
    {


    }

</script>

To a scheme that uses HttpModule?

Also, can I write the Global.asax as pure C# instead of using tags?

From stackoverflow

• In the init of your custom module you need to retrieve the Session-module and add an event handler for the Start event.

  public void Init(HttpApplication context)
  {
      context.BeginRequest += new EventHandler(Begin_Request);
      IHttpModule sessionModule = context.Modules["Session"];
      if(sessionModule != null && 
          sessionModule.GetType() == typeof(System.Web.SessionState.SessionStateModule))
      {
          (sessionModule as System.Web.SessionState.SessionStateModule).Start 
            += new EventHandler(CustomHttpModule_Start);
      }
  }
  

  Also, can I write the Global.asax aspure C# instead of using tags?

  Yes you can add a code behind in the in the Global.asax and change the content to

  <%@ Application Language="C#" CodeBehind="Global.asax.cs" Inherits="Global" %>
  

  Your code behind should inherit from System.Web.HttpApplication

  public class Global : System.Web.HttpApplication
  {
    public Global()   { }
  
    void Session_Start(object sender, EventArgs e)
    {
        // Code that runs when a new session is started
    }
  }