Setting cookie doesn't persist between web requests - asp.net

Question

I've created a brand new ASP.Net 4.6 MVC project, and have tried to set a value in the Requests Cookies collection and retrieve it in the next request. I'm using cookies because Session isn't available yet within the Application_BeginRequest method. Using the following code, the cookie value I ask for is null in every request I make, despite setting it.
public class MvcApplication : System.Web.HttpApplication
{
protected void Application_Start()
{
AreaRegistration.RegisterAllAreas();
FilterConfig.RegisterGlobalFilters(GlobalFilters.Filters);
RouteConfig.RegisterRoutes(RouteTable.Routes);
BundleConfig.RegisterBundles(BundleTable.Bundles);
}
protected void Application_BeginRequest()
{
var cookie = this.Request.Cookies.Get("Foo");
string value = cookie?.Value;
if (string.IsNullOrEmpty(value))
{
cookie = new HttpCookie("Foo", "Bar");
cookie.Expires = System.DateTime.UtcNow.AddHours(1);
this.Request.Cookies.Add(cookie);
}
}
protected void Application_EndRequest()
{
var cookie = this.Request.Cookies.Get("Foo");
string value = cookie?.Value;
}
}
What am I doing wrong? All of the posts I've seen relating to cookies shows setting/getting them in this fashion, with Request.Cookies.Get/Request.Cookies.Add.

Answer 1

You are not setting the cookie in this code you are only reading it, I made this same mistake. Use this
this.Response.Cookies.Add(cookie);
instead of
this.Request.Cookies.Add(cookie);
You should now see it in google chromes Application -> Cookies for your site

Answer 2

If you want to get state for each request, you have to do in Application_AcquireRequestState
Your Application_AcquireRequestState implementation should be :
protected void Application_AcquireRequestState(object sender, EventArgs e)
{
var cookie = this.Request.Cookies.Get("Foo");
string value = cookie?.Value;
if (string.IsNullOrEmpty(value))
{
cookie = new HttpCookie("Foo", "Bar");
cookie.Expires = System.DateTime.UtcNow.AddHours(1);
this.Request.Cookies.Add(cookie);
}
}