//搜索课程列表
        protected void btnCommitGradeCertificate_Click(object sender, EventArgs e)
        {
            DalOperationAboutEnglishExam doac = new DalOperationAboutEnglishExam();

            try
            {
                doac.BatchUpdateSignUpInfoState("gradeCertificateState", ddlGradeCertificate.SelectedValue, int.Parse(ddlEnglishExamNotify.SelectedValue), ddlSchoolClass.SelectedValue);
                Javascript.AlertAndRedirect("更改当前班级所有报名学生成绩单状态成功!", "/Teacher/EnglishExamManage.aspx?fragment=1", Page);
            }
            catch (Exception ex)
            {
                MongoDBLog.LogRecord(ex);
                Javascript.GoHistory(-1, "更改当前班级所有报名学生成绩单状态失败,请检查格式是否有误!", Page);
            }
        }