access session object from classlibrary

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I am developing an application architecture that uses 2 sub projects: a) asp.net web application (it covers user interface and business logic) and b) class library. (it covers data access layer)

After system user successfully logs in , the user information is stored in a session object.

The problem i am facing is when i try to access that session object in class library project(data access layer), it always returns null.

I need to access the session object in class library project because, in my case each user has their own username and password for database access(for security reasons);

So, How how do i read and write from/to session object in class library project

Posted 12-Aug-12 22:59pm

Bikash Shrestha From Nepal

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Comments

StianSandberg 13-Aug-12 5:36am

You'll have to add System.Web reference to your project. Then access HttpContext System.Web.HttpContext.Current

2 solutions

Solution 3

thank u very much raju melveetilpurayil,i tried your code and it works quite well for the scenario i questioned about.
but now, i need to implement wcf layer between web project and class library project.

Now My web application(User Interface) calls wcf service(My services/functions) and wcf interacts with the class library(data access layer).

Web Application <=====> WCF <=====> Class Library <=====> Database

how do i achieve the same thing that you solved for previous scenario.

Posted 13-Aug-12 20:22pm

Bikash Shrestha From Nepal

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raju melveetilpurayil · Accepted Answer · 2012-08-12T23:22:00

Solution 1

might help

C#

using System.Web.SessionState;
/// <summary>
/// Summary description for Class1
/// </summary>
public class Class1:IRequiresSessionState
{
    public Class1()
    {
        //
        // TODO: Add constructor logic here
        //
    }
    public object GetSession(string key) {

         object sessionKey = HttpContext.Current.Session[key];
         return sessionKey;
    }
}

Posted 12-Aug-12 23:22pm

raju melveetilpurayil

Comments

Dylan Morley 13-Aug-12 6:00am

from OP: thanks raju melveetilpurayil, but it didn't worked

raju melveetilpurayil 13-Aug-12 6:25am

it should work, please check the whole sample
class lib
<pre>
using System;
using System.Collections.Generic;
using System.Text;
using System.Web;
using System.Web.SessionState;
namespace ClassLibrary1
{
public class SessionHandler:IRequiresSessionState
{
public SessionHandler() { }
public object GetSession(string key) {
object session = HttpContext.Current.Session[key];
return session;
}
public void SetSession(object data,string key) {
HttpContext.Current.Session.Add(key, data);
}

public string Test(string sessionKey){

string ss = GetSession(sessionKey).ToString();
return ss + " from ClassLibrary1";
}

}
}
</pre>

test page
<pre>
using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using ClassLibrary1;
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
SessionHandler s = new SessionHandler();
s.SetSession("TestSession", "skey");

Response.Write(s.GetSession("skey").ToString());
Response.Write(s.Test("skey"));
}
}
</pre>

Output
<pre>
TestSessionTestSession from ClassLibrary1
</pre>

Punjabi Nikki 20-Jun-16 14:23pm

Awesome. It works like charm!
Thank You.

Member 13139151 23-Mar-22 8:45am

واللهى انت راجل محترم

kevinkwtun 10-Aug-17 2:48am

Cool, that works for me too. Thanks mate.