c# - Session in generic handler? -

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i have following simple handler (removed code vissibilty sakes, below still fails)

<%@ webhandler language="c#" class="downloadhandler" %> using system; using system.web;  public class downloadhandler : ihttphandler {     public void processrequest(httpcontext context)     {         if (context.session["t1"] != "true")         {          }     }      public bool isreusable     {                 {             return false;         }     } }

the line if (context.session["t1"] != "true") failing "object reference not set instance of object." , dont quite why is?

that's because http handler in order access session need explicitly implement irequiressessionstate interface.

keep in mind if there implicit locking on session object , won't able have multiple handlers in same session state processed simultaneously.

there ireadonlysessionstate interface read-only session state access.


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