.net core controller action sharing values using HttpContext - asp.net-core

Question

I've two controller action in my application , FirstAction and SecondAction.
When the FirstAction is called , I want to store a data and want to reuse in SecondAction.
I've tried HttpContext and cannot get value in SecondAction. It always retrun null .
public async Task<IActionResult> FirstAction()
{
HttpContext.Items.Add("Key1", myValue1);
HttpContext.Items.Add("Key2", myValue2);
}
public async Task<IActionResult> SecondAction()
{
var _value1 = HttpContext.Items["Key1"]?.ToString();
var _value2 = HttpContext.Items["Key2"]?.ToString();
}
Is there any better way for such kind of scenairo ?

Answer 1

HttpContext.Items stores data for a single request only. From the docs on state management :
The HttpContext.Items collection is used to store data while processing a single request. The collection's contents are discarded after a request is processed.
You can store data in session state to preserve it from one request to the next, as long as a user's session is active. You'd have to configure session storage first. The in-memory option is only valid for a single server. Database or Redis storage are suitable for server farms used eg in load balancing scenarios.
The docs show how to set and read session state using strongly typed methods, eg :
HttpContext.Session.SetString(SessionKeyName, "The Doctor");
HttpContext.Session.SetInt32(SessionKeyAge, 773);
and
var name = HttpContext.Session.GetString(SessionKeyName);
var age = HttpContext.Session.GetInt32(SessionKeyAge);