1.method:

1.method:
public void DetaGrid_bookcate_ItemCommand(object sender, DataGridCommandEventArgs e) 
        ...{

            // this event fires prior to all of the other commands
            // use it to provide a more graceful transition out of edit mode

            DetailCheckIsEditing(e.CommandName);
        }

        public void DetailCheckIsEditing(string commandName) 
        ...{

            if (DetaGrid_bookcate.EditItemIndex != -1) 
            ...{

                // we are currently editing a row
                if (commandName != "Cancel" && commandName != "Update") 
                ...{

                    // user's edit changes (if any) will not be committed
//                    Message.InnerHtml = "在选择另一条目前，请先保存或取消对当前条目的修改！";
                    isEditing = true;
                }
            }
        }


2.method:

  protected void DataGrid_OrderInfo_ItemCommand(object source, DataGridCommandEventArgs e)
        ...{
           if (e.CommandName == "Memo")
            ...{
                //获取控件中的选定项的索引
                this.DataGrid_OrderInfo.SelectedIndex = e.Item.ItemIndex;

                if(DataGrid_OrderInfo.SelectedIndex == -1)
                ...{
                    this.OrdersDetail.Visible = true;
                    Memo = this.txtMemo.Text.Trim();
                    IsDel = this.chkIsDel.Checked.ToString();
                    Datetimed = Convert.ToDateTime(this.txtDateTimed.Text.Trim());
                    CustomerId = Convert.ToInt32(this.txtCustomerId.Text.Trim());
                    ShipDate = Convert.ToDateTime(this.txtshipDated.Text.Trim());
                    Hasview = this.chkHasView.Checked.ToString();
                    Hascheck = this.chkHasCheck.Checked.ToString();
                    Hassend = this.chkHasSend.Checked.ToString();
                    HasReceive = this.chkHasReceive.Checked.ToString();
                    adminPub.spDataGrid_OrderInfo_ItemCommand(Memo, IsDel, Datetimed, CustomerId, ShipDate, Hasview, Hascheck, Hassend, HasReceive);
                    int CartId = Convert.ToInt32(Request.Params["CartId"].ToString());
                    int ProductId = Convert.ToInt32(Request.Params["ProductId"].ToString());
                    //展示购物车中的商品
                    BindDatagrid_ShoppingCart(CartId, ProductId);


                   

                }
                else
                ...{
                    Response.Write("<script language=javascript>alert('请注册为正式会员才行')</script>");

                }
            }


        }

如果没有在代码中没有DataGrid_CannelCommand() and DataGrid_UpdateCommand() 时就采用第二种方法。