//绑定实验室名称 下拉列表框
        protected void LabDropdownlist()
        {
            LabMS.BLL.Lab lab = new LabMS.BLL.Lab();
            DataSet ds = new DataSet();

            ds = lab.GetAllList();
            LabNameDDL.DataSource = ds;
            LabNameDDL.DataBind();
        }