In PrcessRequest method I created a session like
context.Session["sessionName"]=stringValue;
In aspx file
I call the session ust by
string a = Session["sessionName"].toString();
For this I got only null value. But when I included the following code in Web.Config, it works well.
<configuration>
<system.web>
<sessionState mode="InProc" cookieless="true" />