datagrid行内旋钮做操作

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;
            }
        }