datagrid行内按钮做操作

UI：

<asp:TemplateField HeaderText="Operation" ShowHeader="False">                                            <ItemStyle Width="100px" />                                            <ItemTemplate>                                                <table width="100%">                                                    <tr>                                                        <td align="center" valign="middle">                                                            <asp:ImageButton ID="imgUpdate" CommandName="update" ToolTip="Update" ImageUrl="~/App_Themes/Images/edit.png"                                                                runat="server" />                                                            <%--<a href="ApplicationDetail.aspx?type=update&ApplicationID=<%#Eval("ApplicationID") %>">                                                                <img style="border: 0" width="12" height="12" alt="Update" src="../Themes/images/edit.png" /></a>--%>                                                        </td>                                                        <td align="center" valign="middle">                                                                                                                          <asp:ImageButton ID="imgDelete" CommandName="delete" ToolTip="Delete" ImageUrl="~/App_Themes/Images/del.png"                                                                runat="server" />                                                        </td>                                                    </tr>                                                </table>                                            </ItemTemplate>                                        </asp:TemplateField>

     <asp:TemplateField HeaderText="View">                        <ItemTemplate>                            <a href="DraftVesselOrderDetail.aspx?ServiceID=<%#Eval("Number") %>&TripSelectedIndex= <%# Container.DataItemIndex %>">                                <img style="border: 0" alt="View" src="../../App_Themes/Images/preview.gif" /></a>                        </ItemTemplate>                    </asp:TemplateField>

Code：

 protected void gdvOrderList_RowCommand(object sender, GridViewCommandEventArgs e)        {            switch (e.CommandName.ToLower())            {                case "view":                    var serviceId = long.Parse(e.CommandArgument.ToString());                    Response.Redirect("DraftOrderDetail.aspx?type=view&ServiceID=" + serviceId + "&FromPage=Order&GridPageIndex=" + serviceId);                    break;            }        }