Net 6 using session in a custom class

Question

I can easily work with session in a page model like:

            string SessionKeyName = "logged";
            if (string.IsNullOrEmpty(HttpContext.Session.GetString(SessionKeyName)))
            {
                HttpContext.Session.SetString(SessionKeyName, "notlogged");
                //ViewData["mt"] = "notlogged";
                Response.Redirect("./login");
            }

But if I try to use session in a custom class I get an error:

Severity Code Description Project File Line Suppression State
Error CS0120 An object reference is required for the non-static field, method, or property 'HttpContext.Session' RazorPagesMovie C:\Users\Owner\source\repos\RazorPagesMovie\RazorPagesMovie\Helpers\Chk.cs 20 Active

How would I implement session in a custom class?

Answer 1

it would be simpler to just pass session to the class:

using Microsoft.AspNetCore.Http;
 using Microsoft.AspNetCore.Mvc;
 using Microsoft.AspNetCore.Session;


 namespace RazorPagesMovie.Helpers
 {
     public class Chk
     {
         ISession session;

         public Chk(ISession session)
         {
             this.session = session;
         }

         public void Foo()
         {
             session?.SetString("Name", "Bobby");
             session?.SetInt32("Age", 773);
         }

         public void getFoo()
         {
             session?.GetString("Name");
             session?.SetInt32("Age", 773);
         }
     }
 }

in a page you create

Chk chk = new Chk(HttpContext.Session);

or create a session extension class

public static class SessionExtensions
{
     public static string? GetFoo (this ISession session) => return session["foo"];
     public static void SetFoo(this ISession session, string value) => session["foo"] = value; 
}

and use

var foo = HttpContext.Session?.GetFoo();

Answer 2

Bruce-SqlWork passing session worked, however I had to modify like:

   public class Chk
    {
        ISession session;

        public Chk(ISession session)
        {
            this.session = session;
        }

        public void Foo()
        {
            session?.SetString("Name", "Bobby");
            session?.SetInt32("Age", 773);
        }

        public dynamic? getFoo(string rvalue)
        {
            if (string.IsNullOrEmpty(session.GetString(rvalue)))
            {
                session.SetString("logged", "notlogged");
                return session?.GetString(rvalue);
            }
            else
            {
                return session?.GetString(rvalue);
            }

            //return "na";


            //session?.GetString(rvalue);
            //session?.SetInt32("Age", 773);
        }
    }
}

The ide VS 2022 complained about the void and a return.

Is there any way now to make the methods static?