How to Share Session State Between a .NET 2.0 Web Forms and a .NET 3.5 MVC2 Application?

Share sessions across applications using the ASP.NET Session State Service

Question:

How to share a session between two web applications hosted on one server? One application is a .NET 2.0 Web Forms application and the other is a .NET 3.5 MVC2 application.

Answer:

To share sessions across applications using the ASP.NET Session State Service, follow these steps:

1. Configure session state in both applications: Set the session state mode to "SQLServer" in both web.config files and specify the same connection string and machine key.

2. Set session state database: Create a database on a server accessible to both applications and run the "aspnet_regsql" command to set up the session state table.

3. Modify stored procedure: Modify the "TempGetAppID" stored procedure in the session state database to use the application name specified in the connection string, ensuring that both applications specify the same application name.

4. Shared session key: In the web forms application, publish the session key to the MVC application. In the MVC application, retrieve the session key and use it to load session data by implementing custom logic to save and retrieve the session ID.

Implementation example:

In a Web Forms application:

protected void LinkButton1_Click(object sender, EventArgs e)
{
    Session["myvariable"] = "dan";
    string sessionKey = HttpContext.Current.Session.SessionID;

    // 后续代码将sessionKey发布到另一个应用程序
}

In an MVC application:

[HttpPost]
public void Recieve(string sessionKey)
{
    var manager = new SessionIDManager();

    bool redirected;
    bool IsAdded;

    manager.SaveSessionID(HttpContext.ApplicationInstance.Context, sessionKey, out redirected, out IsAdded);
    var myVar = Session["myvariable"];

}

Please note that SessionIDManager a custom implementation is required to handle the saving and retrieval of session IDs. This example only provides a basic framework, actual implementation may require more complex logic to handle the transfer and storage of session data between different applications. In addition, security also needs to be carefully considered to ensure that the transmission of session keys is secure.

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