protected void BindParameter()
        {
            DataTable dt = new DataTable();

            dt = objBL_Laboratory.BL_BindParameter(objML_Laboratory);
            if (dt.Rows.Count > 0)
            {
                DlParameterMapping.DataSource = dt;
                DlParameterMapping.DataBind();
            }
        }
        protected void SelectTestParameter(object sender, EventArgs e)
        {
            DataTable dt = new DataTable();

            objML_Laboratory.TestID = ddlTestName.SelectedItem.Text != "" ? ddlTestName.SelectedItem.Text : null;
            dt = objBL_Laboratory.BL_SelectTestParameterMapping(objML_Laboratory);
            if (dt.Rows.Count > 0)
            {
                DlParameterMapping.DataSource = dt;
                DlParameterMapping.DataBind();
                btnSave.Text = "Update";
            }
            else
            {
                BindParameter();
                btnSave.Text = "Save";
            }
        }