how can i use session in a controller class in asp.net?

Jayraj Chhaya
 Actually  i take web api controller in my asp.net project  i just want to store that otp in session how

when i keep [EnableSessionState] getting assembly reference error could not be found

public class RentPayAPIsController : ApiController
    {
        [HttpPost]
        [Route("api/RentPayAP/RegterRemitter")]
        [ActionName("RegterRemitter")]
        public HttpResponseMessage RegterRemitter([FromBody] Beneficries oMBLoginRequest)
        {
          oMBErrorResponse.OTP = dtremitterotp.Rows[0]["OTP"].ToString();
        }
     }

Hello Jaya Prakash,

Please refer to this thread which has a very good explanation of the mvc core application,

you need to install the Nuget package for the session "Microsoft.AspNetCore.Session package",

https://www.c-sharpcorner.com/blogs/session-management-in-asp-net-core-mvc

public class HomeController : Controller
{
    public IActionResult Index()
    {
     string MySessionValue = "Jaya Prakash";
     HttpContext.Session.SetString("SessionKeyName", MySessionValue);
    }
}

// Access in another Controller
public class TestSessionController : Controller
{
    public IActionResult Index()
    {
     var nameFromSession = HttpContext.Session.GetString(SessionKeyName);
    }
}

Steps:

1. Configure session in startup class services and middleware section 

public void ConfigureServices(IServiceCollection services)
{
    services.AddControllersWithViews();

    services.AddSession(options =>
    {
        options.IdleTimeout = TimeSpan.FromMinutes(30); // Session timeout
        options.Cookie.HttpOnly = true; // Cookie accessible only on the server side
        options.Cookie.IsEssential = true; // Make the session cookie essential
    });
}

public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
{
    app.UseRouting();
    app.UseSession(); // Enable session middleware
    app.UseEndpoints(endpoints =>
    {
        endpoints.MapControllerRoute(
            name: "default",
            pattern: "{controller=Home}/{action=Index}/{id?}");
    });
}

2. Access inside the controller

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

public class MyController : Controller
{
    public IActionResult Index()
    {
        // Store data in session
        HttpContext.Session.SetString("UserName", "JohnDoe");

        return View();
    }

    public IActionResult GetUserName()
    {
        // Retrieve data from session
        string userName = HttpContext.Session.GetString("UserName");

        if (userName != null)
        {
            return Content("User Name: " + userName);
        }
        else
        {
            return Content("User Name not found in session.");
        }
    }

    public IActionResult ClearSession()
    {
        // Remove specific item from session
        HttpContext.Session.Remove("UserName");

        // Or clear entire session
        // HttpContext.Session.Clear();

        return Content("Session data cleared.");
    }
}

Hello,

Please refer the below links,

In this link use the session in the API controller side.

https://www.researchgate.net/publication/371904967_Https_Session_Authentication_in_aspnet_Core_Web_API

Here is the link for, asp.net core mvc

https://dotnettutorials.net/lesson/sessions-in-asp-net-core-mvc/

Thanks

Hi Jaya Prakash,

Please share error details or screen shot so I can help

Jayraj Chhaya not working bro im using only asp.net not core

You can access and utilize session variables within a controller class by leveraging the Session property provided by the Controller base class. This property allows you to store and retrieve session data easily.

public class HomeController : Controller
{
    public IActionResult Index()
    {
        // Storing data in session
        HttpContext.Session.SetString("UserName", "JohnDoe");

        // Retrieving data from session
        var userName = HttpContext.Session.GetString("UserName");

        return View();
    }
}