Change cookie path

Question

In my ASP.NET application, I want to change the cookie path from the root to some specific folder. How can I do that?

Answer 1

Is this an IIS virtual path question or are you trying to share or not share a cookie? Anyway, the framework exposes a Path property where the path can be changed.

ASP.NET Core

https://learn.microsoft.com/en-us/dotnet/api/system.net.cookie.path?view=net-8.0

ASP.NET

https://learn.microsoft.com/en-us/dotnet/api/system.net.cookie.path?view=netframework-4.8.1

Answer 2

How can I do that?

See "Limiting Cookies to a Folder or Application" section in the following Microsoft document:

ASP.NET Cookies Overview

Can you tell us the purpose? I am wondering why you need to specify the path since the default setting ("/") is usually practical in ASP.NET Web app.

Do you understand that there is limitation as described in the above Microsoft document? Do you realize that you will have to specify the path every time you modify or delete the cookie and it might be very cumbersome?

Answer 3

Hi @Adeel Mirza,

You can try to create your own SessionIDManager, but you will also need to configure it on Web.config.

Your SessionIdManager class,

public class MySessionIDManager : SessionIDManager, ISessionIDManager
{
    void ISessionIDManager.SaveSessionID(HttpContext context, string id, out bool redirected, out bool cookieAdded)
    {
        base.SaveSessionID(context, id, out redirected, out cookieAdded);

        if (cookieAdded)
        {
            var name = "ASP.NET_SessionId";
            var cookie = context.Response.Cookies[name];
            cookie.Path = "/yourPath";
        }
    }
}

Web.config, replace namespace and class for yours. This goes inside <system.web> section.

<sessionState sessionIDManagerType = "Namespace.MySessionIDManager"></sessionState>

ASP.NET Forum - Explains how to override path

Best regards,
Lan Huang

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