Creating different session ID on new window
1)create object of SessionIDManager
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System.Web.SessionState.SessionIDManager s1 = new
System.Web.SessionState.SessionIDManager();
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2)Remove session id create a new session Id
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s1.RemoveSessionID(HttpContext.Current);
s1.CreateSessionID(HttpContext.Current);
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3)Assign value to session
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Session["page1Session"] = "page1 session";
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4)In new page assign session value as above
5)To look session Id in each page write
Response.Write(Session.SessionID)