protected void btnDelAccept_Click(object sender, EventArgs e)
        {
            int        index             = businessProductGV.SelectedIndex;
            LinkButton lbt               = businessProductGV.Rows[index].FindControl("toDel") as LinkButton;
            int        businessProductId = int.Parse(lbt.CommandArgument);

            lbt.Visible = true;

            int usrId = int.Parse(Session["usrId"] as string);

            Xm_db xmDataCont = Xm_db.GetInstance();

            var businessProdEdit =
                from busiProd in xmDataCont.View_businessProduct
                where busiProd.BusinessProductId == businessProductId &&
                busiProd.UsrId == usrId &&
                busiProd.BusinessProductEd > DateTime.Now
                select busiProd;

            if (businessProdEdit.Count() > 0)
            {
                View_businessProduct businessProdTemp = businessProdEdit.First();
                xmDataCont.Return_businessProduct_del(
                    businessProdTemp.ProjectTagId, businessProdTemp.ProductStockId, businessProdTemp.ProductId, businessProdTemp.BusinessProductId);

                btnCancel.Visible    = false;
                btnAdd.Visible       = true;
                btnDelAccept.Visible = false;

                //try
                //{
                //    xmDataCont.SubmitChanges(System.Data.Linq.ConflictMode.ContinueOnConflict);
                //}
                //catch (System.Data.Linq.ChangeConflictException cce)
                //{
                //    string strEx = cce.Message;
                //    foreach (System.Data.Linq.ObjectChangeConflict occ in xmDataCont.ChangeConflicts)
                //    {
                //        occ.Resolve(System.Data.Linq.RefreshMode.KeepChanges);
                //    }

                //    xmDataCont.SubmitChanges();
                //}

                var businessProd =
                    from busiProd in xmDataCont.View_businessProduct
                    where busiProd.BusinessProductEd > DateTime.Now &&
                    busiProd.ProjectDetail == "return"
                    select busiProd;

                DataTable dtSource = businessProd.ToDataTable();
                Session["dtSources"] = dtSource;

                businessProductGV.DataSource = Session["dtSources"];
                businessProductGV.DataBind();


                //GridViewRow gvr = businessProductGV.Rows[index];

                //Label lbl = gvr.FindControl("lblMessage") as Label;
                //lbl.Visible = false;
            }
            else
            {
                //Label lbl = (lbt.Parent.Parent as GridViewRow).FindControl("lblMessage") as Label;
                //lbl.Text = "无权删除";
                //lbl.Visible = true;
                Page.ClientScript.ShowAlertWindow("无权修改", this.GetType());
            }

            businessProductGV.SelectedIndex = -1;
            businessProductGV.Enabled       = true;

            btnDelAccept.Visible = false;
            btnCancel.Visible    = false;

            btnAdd.Visible = true;
        }