I was under the (incorrect) impression that use of the Session object was no different in a class definition than in a page code-behind file.

The code I'm using is along these lines:

If Session("UserID") Is Nothing Then
   'some code
End If

I get an error saying that the name 'Session' is not declared. Something's up. I would think that referencing a simple session value would be rather straightforward. Any ideas?


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In God we trust, everything else we test.

Did you update the web.config file to allow sessions?

<configuration>
<system.web>
<sessionState
            mode="InProc"
            cookieless="false"
            timeout="20"
    />
</system.web>
</configuration>

Stu-

Yes, the web.config file is set up properly to allow sessions, and I am using them without issues on my pages.

-Colonel

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In God we trust, everything else we test.

Well, I was able to do a concise workaround.

Instead of using the Session explicitly in the class file, I passed the value in as a parameter from the calling page. This worked perfectly. (I guess workaround is too strong a term here - this is probably how I should have done this in the first place)

However, I would still like to know what the deal is with the Session in class definitions.


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In God we trust, everything else we test.

Colonel,

When you create an ASPX page or ASCX user control (and code-behind class), the parent classes are System.Web.UI.Page and System.Web.UI.UserControl, respectively. Each of these classes have public properties for Session, Request, Server and so-on. This gives you access to the instance of each object within the context of the current http request.

However, when you create a stand-alone class, that class has no knowledge of the instances of those objects. So you need to use the "current context":

System.Web.HttpContext.Current.Request
System.Web.HttpContext.Current.Server
System.Web.HttpContext.Current.Session

This will give you the instance of each object for the current http request.

Peter
------------------------------------------------------
Work smarter, not harder.

Thanks Peter, that's some critical info.

Once again, You.TheMan = True :)

-Colonel

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In God we trust, everything else we test.

I'm sorry Guys, i'm still not able to access my session value from a class file. Even after using System.Web.HttpContext.Current.Session

Any Idea???

Thanks in advance

Where is this class living? Is it in the web application project or a class library? If it's in a class library then you need to make sure that the library has a reference to System.Web. If the class is in the web application project or you already have the correct reference in the class library then I'm not sure what the problem is.

Yes the Class File is in web Application project only. And the reference to "System.Web" is already there. Even then I'm not able to. I am assigning the value to the session variable in an ascx page, not in aspx page. Will this matter?

You can access Session from both a page and a user control in the same way. However you are saying you can't access it from a class. Can you provide more detail on the error you are getting?