protected void btnSaveAndNext_Click(object sender, EventArgs e)
        {
            string strId = Request.QueryString.Get("id");

            if (Grid1.Items.Count == 0)
            {
                SessionSet.PageMessage = "请先选择试卷!";
                return;
            }

            if (!string.IsNullOrEmpty(hfPaperId.Value))
            {
                //先删除后新增
                ExamBLL examBLL = new ExamBLL();
                examBLL.UpdateExamPaper(int.Parse(strId), int.Parse(hfPaperId.Value));
            }

            Response.Redirect("SelectEmployeeDetail.aspx?mode=" + ViewState["mode"].ToString() + "&id=" + strId);
        }