DataGrid/Gridview中的按钮反选事件与NamingContainer(命名容器)

DataGrid中想实现这样的效果：
根据某一字段列的值动态改变按钮的文本，比如：
点击按钮列，自动更新某列原为0的值为1，并将按钮列的文本改为“置0”,
再按下，自动更新某列原为1的值为0，并将按钮列的文本改为“置1”,

最终通过NamingContainer,实现！ 方法如下 ：

<asp:DataGrid id="DataGrid1" runat="server" AutoGenerateColumns="False">
                <Columns>
                    <asp:BoundColumn DataField="HonoreeID" HeaderText="ID"></asp:BoundColumn>
                    <asp:BoundColumn DataField="status" HeaderText="状态">
                        <HeaderStyle Width="300px"></HeaderStyle>
                    </asp:BoundColumn>
                    <asp:TemplateColumn HeaderText="状态是否为0">
                        <HeaderStyle HorizontalAlign="Center" Width="10%"></HeaderStyle>
                        <ItemStyle HorizontalAlign="Center"></ItemStyle>
                        <ItemTemplate>
                            <asp:Label id="lb" runat="server" Visible="false" Text='<%# ((DataBinder.Eval(Container, "DataItem.status", "{0}"))=="0")?"是":"<font color=red>否</font>" %>'>
                            </asp:Label>
                            <asp:Button ID="changeState" Runat="server" Text='<%# ((DataBinder.Eval(Container, "DataItem.status", "{0}"))=="0")?"转为1":"转为0" %>'>
                            </asp:Button>
                        </ItemTemplate>
                    </asp:TemplateColumn>
                </Columns>
            </asp:DataGrid>

后台：

protected System.Web.UI.WebControls.DataGrid DataGrid1;
   
        public int  KeyID 
        ...{
            get
            ...{
                object o =ViewState ["KeyID"];
                if(o!=null)
                ...{
                    return int.Parse(ViewState ["KeyID"].ToString());
                }
                else
                ...{
                    return 0;
                }
            }
            set
            ...{
                ViewState ["KeyID"]        = value;
            }
        }
        public int  RowState 
        ...{
            get
            ...{    return int.Parse(ViewState ["RowState"].ToString());
               
            }
            set
            ...{
                ViewState ["RowState"]        = value;
            }
        }
        private void Page_Load(object sender, System.EventArgs e)
        ...{
            if(IsPostBack)
            ...{return ;
            }
            getData();
        }


        private void getData()
        ...{
            //SqlConnection con = new SqlConnection(ConfigurationSettings.AppSettings["DsnPubs"]);
   
            SqlConnection con = new SqlConnection(System.Configuration.ConfigurationSettings.AppSettings["Mblog"]);
            SqlCommand  cmd;
            con.Open();
            cmd = new SqlCommand("select * from dbo.Honoree", con);
            DataGrid1.DataSource = cmd.ExecuteReader();
            DataGrid1.DataBind();
            con.Close();
        }

        private bool UpdateData(int ID,int OldState)
        ...{
            SqlConnection con = new SqlConnection(System.Configuration.ConfigurationSettings.AppSettings["Mblog"]);
            SqlCommand  cmd;
            con.Open();
            try
            ...{
                string strSql="Update Honoree set Status={0} where HonoreeID={1}";
                strSql=string.Format(strSql,(OldState==0?1:0).ToString(),ID.ToString());
                cmd = new SqlCommand(strSql, con);
                cmd.ExecuteNonQuery();
                cmd.Dispose();
                return true;
            }
            catch
            ...{
                return  false;
            }
            finally
            ...{
                con.Close();
                con.Dispose();
               
            }
            return  false;
        }


        Web 窗体设计器生成的代码#region Web 窗体设计器生成的代码
        override protected void OnInit(EventArgs e)
        ...{
            //
            // CODEGEN: 该调用是 ASP.NET Web 窗体设计器所必需的。
            //
            InitializeComponent();
            base.OnInit(e);
        }
       
        /**//// <summary>
        /// 设计器支持所需的方法 - 不要使用代码编辑器修改
        /// 此方法的内容。
        /// </summary>
        private void InitializeComponent()
        ...{   
            this.DataGrid1.ItemCreated += new System.Web.UI.WebControls.DataGridItemEventHandler(this.DataGrid1_ItemCreated);
            this.DataGrid1.ItemDataBound += new System.Web.UI.WebControls.DataGridItemEventHandler(this.DataGrid1_ItemDataBound);
            this.Load += new System.EventHandler(this.Page_Load);

        }
        #endregion

        private void DataGrid1_ItemCreated(object sender, System.Web.UI.WebControls.DataGridItemEventArgs e)
        ...{
            if(e.Item.ItemType==ListItemType.Item  || e.Item.ItemType    ==    ListItemType.AlternatingItem)
            ...{
                Button b=(Button)e.Item.FindControl("changeState");
                if(b!=null)
                ...{
                   
                    b.Click+=new EventHandler(b_Click);
                }
            }
       
        }

        private void DataGrid1_ItemDataBound(object sender, System.Web.UI.WebControls.DataGridItemEventArgs e)
        ...{
           
        }

        private void b_Click(object sender, EventArgs e)
        ...{
            Button but = (Button)sender;
            DataGrid dg = (DataGrid)but.NamingContainer.NamingContainer;
            //此处是关键！！即找到包含按钮的命名容器的上层命名容器
            if(dg == null) return;
            DataGridItem di =(DataGridItem)but.NamingContainer;
            TableCell key= (TableCell)di.Cells[0];
            TableCell state= (TableCell)di.Cells[1];

            KeyID=(key==null)?0:int.Parse(key.Text);
            RowState=(state==null)?0:int.Parse(state.Text);
            Response.Write(UpdateData(this.KeyID,this.RowState).ToString());
           
            getData();
        }