<!--前台传值-->
 <asp:TemplateField HeaderText="操作">

                        <ItemTemplate>

                            <asp:LinkButton ID="lbtnDelete" runat="server" CommandName="CustomDelete" CommandArgument="<%# Container.DataItemIndex)  %>>" OnClientClick="javascript:return confirm('真的要删除吗？');">删除</asp:LinkButton>

                            <asp:LinkButton ID="lbtnEdit" runat="server" CommandName="CustomUpdate" CommandArgument="<%# Container.DataItemIndex %>">编辑</asp:LinkButton>

                        </ItemTemplate>

                    </asp:TemplateField>

//后台获取

 int index = Convert.ToInt32(e.CommandArgument);

            GridViewRow row = GridView1.Rows[index];

<!--前台传值-->
<asp:TemplateField>

                        <ItemTemplate>

                            <asp:LinkButton ID="LinkButton1" runat="server" CommandArgument='<%# Eval("Id") %>' CommandName="tt">删除</asp:LinkButton>

                        </ItemTemplate>

                    </asp:TemplateField>

//后台获取Id值

string id = e.CommandArgument.ToString();