How we insert session value into table

Question

I want insert session value into table how it will we possible by this code

 if (Session["EmailID"] != null)

        {

            String sid, sname;

            sid = ddlSubjects.SelectedItem.Value;

            sname = ddlSubjects.SelectedItem.Text;

            Examination exam = new Examination(Session["EmailID"].ToString(), Int32.Parse(sid), sname);  // Problem here

            exam.GetQuestions();

            Session.Add("questions", exam);

            Response.Redirect("examination.aspx");

        }