Question

I’m creating a small application that I will distribute via NuGet. My web app is using Structuremap for DI and in my global.asax I have this snippet:

 protected void Application_EndRequest() {
    ObjectFactory.ReleaseAndDisposeAllHttpScopedObjects();
}

is it possible to hook this up in another way without modifying the global.asax?

Answer 1

You could write an HttpModule which could be registered in web.config:

public class MyModule : IHttpModule 
{
    public void Init(HttpApplication application) 
    {
        application.EndRequest += Application_EndRequest;
    }

    private void Application_EndRequest(Object source, EventArgs e) 
    {
        ObjectFactory.ReleaseAndDisposeAllHttpScopedObjects();
    }        

    public void Dispose() 
    {
    }
}

and in web.config:

<httpModules>
    <add name="MyModule" type="AppName.MyModule, AppName" />
</httpModules>

Another, more MVCish way would be to write a global action filter:

public class MyActionFilterAttribute : ActionFilterAttribute
{
    public override void OnActionExecuted(ActionExecutedContext filterContext)
    {
        ObjectFactory.ReleaseAndDisposeAllHttpScopedObjects();
    }
}

which could be registered in the RegisterGlobalFilters method of Global.asax:

public static void RegisterGlobalFilters(GlobalFilterCollection filters)
{
    filters.Add(new HandleErrorAttribute());
    filters.Add(new MyActionFilterAttribute());
}