Asp.net session state, cookies and subdomains

1.         protected  void Application_PreRequestHandlerExecute(Object sender, EventArgs e)

2.          

3.             {

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5.               /// only apply session cookie persistence to requests requiring session information

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7.          

8.          

9.               #region session cookie

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11.             if (Context.Handler is IRequiresSessionState || Context.Handler is IReadOnlySessionState )

12.        

13.             {

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15.               /// Ensure ASP.NET Session Cookies are accessible throughout the subdomains.

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19.               if (Request.Cookies["ASP.NET_SessionId"] != null && Session != null && Session.SessionID != null)

20.        

21.               {

22.        

23.                 Response.Cookies["ASP.NET_SessionId"].Value = Session.SessionID;

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25.                 Response.Cookies["ASP.NET_SessionId"].Domain = ".know24.net"; // the full stop prefix denotes all sub domains

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27.                 Response.Cookies["ASP.NET_SessionId"].Path = "/"; //default session cookie path root        

28.        

29.               }

30.        

31.             }

32.        

33.             #endregion   

34.        

35.           }