Disable Session state per-request in ASP.Net MVC

I am creating an ActionResult in ASP.Net MVC to serve images. With Session state enabled, IIS will only handle one request at a time from the same user. (This is true not just in MVC.)

Therefore, on a page with multiple images calling back to this Action, only one image request can be handled at a time. It's synchronous.

I'd like this image Action to be asynchronous -- I'd like multiple image requests to each execute without needing the previous one to complete. (If the images were just static files, IIS would serve them up this way.)

So, I'd like to disable Session just for calls to that Action, or to specify that certain requests do not have Session state. Anyone know how this is done in MVC? Thanks!

Edit Report

Change DefaultCOntrollerFactory to custom ControllerFactory class. Default Controller.TempDataProvider use SessionStateTempDataProvider. you can change it.

1.Set web.config/system.web/sessionState:mode="Off".

2.create DictionaryTempDataProvider class.

  public class DictionaryTempDataProvider : ITempDataProvider
  {
    public IDictionary<string, object> LoadTempData(ControllerContext controllerContext)
    {
      return new Dictionary<string, object>();
    }

    public void SaveTempData(ControllerContext controllerContext, IDictionary<string, object> values)
    {
    }
  }

3.Create DictionaryTempDataControllerFactory

  public class DictionaryTempDataControllerFactory : DefaultControllerFactory
  {
    public override IController CreateController(System.Web.Routing.RequestContext requestContext, string controllerName)
    {
      var controller = base.CreateController(requestContext, controllerName) as Controller;
      if (controller!=null)
        controller.TempDataProvider = new DictionaryTempDataProvider();

      return controller;
    }
  }

4.In global.asax.cs Apprication_Start event set DictionaryTempDataControllerFactory.

protected void Application_Start()
{
  RegisterRoutes(RouteTable.Routes);

  ControllerBuilder.Current.SetControllerFactory(
   new DictionaryTempDataControllerFactory()
  );
}

answered 2009-09-23T15:29:12.043

Disable Session state per-request in ASP.Net MVC

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