protected void Button1_Click(object sender, EventArgs e) { Student stu = (Student)Session["student"]; TitleManage titleManage = new TitleManage(); titleManage.ModifiyTitleChooseNum(stu.Title.TitleID); int num = studentManage.EscTitleByStudentId(stu.SID); ThesisManage.BLL.ThesisManage thesisManage = new ThesisManage.BLL.ThesisManage(); int num2 = thesisManage.DeleteThesisByStudentID(stu.SID); if (num > 0) { Student student = studentManage.GetStudentBySID(stu.SID); Session.Remove("student"); Session["student"] = student; this.Page.ClientScript.RegisterStartupScript(this.GetType(), "", "<script>alert('退选成功!');window.location.href='StudentMessage.aspx';</script>"); } else { this.Page.ClientScript.RegisterStartupScript(this.GetType(), "", "<script>alert('退选失败!');</script>"); } }