private void CourseList() { LearnSite.BLL.Courses course = new LearnSite.BLL.Courses(); int grade = Int32.Parse(DDLgrade.SelectedValue); int term = Int32.Parse(Session["term"].ToString()); GVCourse.DataSource = course.GetLimitList(grade, term); string Hid = Request.Cookies["TeacherCookies"].Values["Hid"].ToString(); if (Session[Hid+"pageindex"] != null) GVCourse.PageIndex = Int32.Parse(Session[Hid+"pageindex"].ToString()); GVCourse.DataBind(); }