动态绑定事件中的object.Attributes.Add()

GameAttend.aspx

<asp:datagrid id="dgGameAttend" 



<asp:TemplateColumn HeaderText="備 考">
                                        <HeaderStyle HorizontalAlign="Center" Width="390px"></HeaderStyle>
                                        <ItemTemplate>
                                            <asp:Label id="lblMemo" runat="server" Width="390px" Text='<%# DataBinder.Eval(Container, "DataItem.memo") %>'>
                                            </asp:Label>
                                        </ItemTemplate>
                                        <EditItemTemplate>
                                            <asp:TextBox id=edit_memo runat="server" Text='<%# DataBinder.Eval(Container, "DataItem.memo") %>'>
                                            </asp:TextBox>
                                        </EditItemTemplate>
                                    </asp:TemplateColumn>
                                </Columns>
                            </asp:datagrid>

<DIV id="MemoBoard" style="POSITION: relative" ms_positioning="GridLayout"></DIV>

<script language="JavaScript">
        <!--
            function memoDisplay(m)
            {
                var obj = document.all("MemoBoard");
                obj.innerText = m;
            }
            
            function memoDisplay2()
            {
                document.all("MemoBoard").innerText = '';
            }
        //-->
        </script>

GameAttend.aspx.cs

        public string MemoStringSlice(string memo)
        {
            string text = memo;

            if (memo.Length >= 10)
            {
                text = memo.Substring(0, 10);
                text = text + " ";
            }

            return text;
        }

        private void dgGameAttend_ItemDataBound(object sender, System.Web.UI.WebControls.DataGridItemEventArgs e)
        {
            if(e.Item.ItemType == ListItemType.AlternatingItem || e.Item.ItemType == ListItemType.Item)
            {
                Label l = (Label)e.Item.Cells[4].FindControl("lblMemo");

                if(l != null)
                {
                    //l.Attributes.Add("onmouseover", "memoDisplay(" + Convert.ToString(e.Item.ItemIndex + 1) + ");");
                    l.Attributes.Add("onmouseover", "memoDisplay('" + l.Text + "');");
                    l.Attributes.Add("onmouseout", "memoDisplay2();");

                    l.Text = MemoStringSlice(l.Text);
                }
            }
        }