CODEWITHSUNDEEP
asp.net-mvcsession-variables
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Reputation: 3121

How to get session value asp.net core inside a view

I am trying to get session like this

@HttpContext.Session.GetString("some");

But I am getting

*

An object reference is required for the non-static field ......

*

Any one with ideas?

Upvotes: 20

Views: 44756

Answers (3)

So_oP
So_oP

Reputation: 1293

I know there has already been answers, but for ASP.NET Core 6 things little changed.

Again you have to add Session in services, and use it in middleware pipeline.

In Program.cs add the following

builder.Services.AddSession();

app.UseSession();

But instead of injecting HttpContextAccesor and so on, you can have direct access to Context class in view like this`

        Context.Session.SetInt32("sessionInt",1);

@Context.Session.GetInt32("userId")

Upvotes: 3

Shyju
Shyju

Reputation: 218962

You have to inject the IHttpContextAccessor implementation to the views and use it.

@using Microsoft.AspNetCore.Http
@inject Microsoft.AspNetCore.Http.IHttpContextAccessor HttpContextAccessor

Now you can access the HttpContext property and then Session

<p>
    @HttpContextAccessor.HttpContext.Session.GetInt32("MySessionKey")
</p>

Assuming you have all the necessary setup done to enable session in the startup class.

In your ConfigureServices method,

services.AddSingleton<IHttpContextAccessor, HttpContextAccessor>();

and IApplicationBuilder.UseSession method call in the Configure method.

app.UseSession();

Upvotes: 43

yogihosting
yogihosting

Reputation: 6294

First enable session by adding the following 2 lines of code inside the ConfigureServices method of startup class:

services.AddMemoryCache();
services.AddSession();

In the same method add the code for creating singleton object for IHttpContextAccessor to access the session in the view.

services.AddSingleton<IHttpContextAccessor, HttpContextAccessor>();

Now inside the Configure method of startup class you will have to add .UseSession() before the .UseMvc():

app.UseSession();

The full code of Startup class is given below:

public void ConfigureServices(IServiceCollection services)
{
    services.AddMvc();
    services.AddMemoryCache();
    services.AddSession();
    services.AddSingleton<IHttpContextAccessor, HttpContextAccessor>();
}

// This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
public void Configure(IApplicationBuilder app, IHostingEnvironment env)
{
    app.UseDeveloperExceptionPage();
    app.UseStatusCodePages();
    app.UseStaticFiles();
    app.UseSession();
    app.UseMvc(routes =>
    {
        // Default Route
        routes.MapRoute(
            name: "default",
            template: "{controller=Home}/{action=Index}/{id?}");
    });
}

Then go to the view and add the following 2 lines at the top:

@using Microsoft.AspNetCore.Http
@inject Microsoft.AspNetCore.Http.IHttpContextAccessor HttpContextAccessor

And then you can get the value from session variable in the view like:

@HttpContextAccessor.HttpContext.Session.GetString("some")

I have only modified the answer from @Shyju by including the complete code.

Upvotes: 10

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