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ASP.NET Commander Page

Posted on 2005-05-09
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Last Modified: 2010-04-07
I am in the process of building a commander page for my ASP.NET application.  

The commander page is a class that inherits "System.Web.UI.Page"

Then, on webforms within my application, rather than inheriting "System.Web.UI.Page" on the forms, I inherit my commander page.

This works great, up until I try to access Session variables from my commander class.

I've tried several variations, and I keep getting the following error:

"Session state can only be used when enableSessionState is set to true, either in a configuration file or in the Page directive"

Keep in mind, that Session State is ENABLED, and works fine from other locations.  I think this has to do with an order in which the code is being executed but not quite sure.

Any help would be greatly appreciated.

Thanks
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Question by:mmarksbury
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5 Comments
 
LVL 33

Expert Comment

by:raterus
ID: 13961593
I do this all the time, and I've never ran into a problem with the session.  Can you post the source of this page?
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LVL 7

Author Comment

by:mmarksbury
ID: 13961625
using System;
using System.Data;
using System.Configuration;

namespace MyApp.BLL
{
      public abstract class AdminPage : System.Web.UI.Page
      {
            private int      _UserId;
            
            public AdminPage()
            {
                                                _UserId = Convert.ToInt32(this.Session["UserId"]);
                  System.Web.UI.WebControls.Literal PL = new System.Web.UI.WebControls.Literal();
                  PL.Text = _UserId.ToString();
                  this.Controls.Add(PL);
            }
      }
}
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LVL 33

Accepted Solution

by:
raterus earned 2000 total points
ID: 13961654
You shouldn't be defining your own constructor in this page, rather you should use the normal events of the asp.net page lifecycle to do things.  For example, the code you have looks like it would be better placed in page_init.

--Michael
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LVL 7

Author Comment

by:mmarksbury
ID: 13961674
an example ?
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LVL 7

Author Comment

by:mmarksbury
ID: 13961689
Nevermind, I got it.  Thanks
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