gridview 模板列取值问题
前台:
<asp:GridView ID="GV" runat="server" AutoGenerateColumns="False" Height="1px"
Style="z-index: 100; left: 8px; position: absolute; top: 8px" Width="800px" CellPadding="4" Font-Size="Small" ForeColor="#333333" AllowSorting="True">
<Columns>
<asp:TemplateField HeaderText="人员编码">
<ItemTemplate>
<a href="#" onclick="ShowValue(this);"><%#Eval("人员编码")%></a>
</ItemTemplate>
<ItemStyle Width="80px" />
</asp:TemplateField>
<asp:BoundField DataField="姓名" HeaderText="姓名" >
<ItemStyle Width="60px" />
</asp:BoundField>
<asp:BoundField HeaderText="出勤工日" >
<ItemStyle Width="15px" />
</asp:BoundField>
<asp:BoundField HeaderText="小计" >
<ItemStyle Width="15px" />
</asp:BoundField>
<asp:BoundField HeaderText="病假" >
<ItemStyle Width="15px" Wrap="True" />
</asp:BoundField>
<asp:BoundField HeaderText="事假">
<ItemStyle Width="15px" />
</asp:BoundField>
<asp:BoundField HeaderText="婚假">
<ItemStyle Width="15px" />
</asp:BoundField>
<asp:BoundField HeaderText="产假">
<ItemStyle HorizontalAlign="Right" Width="15px" />
</asp:BoundField>
<asp:BoundField HeaderText="丧假">
<ItemStyle Width="15px" />
</asp:BoundField>
<asp:BoundField HeaderText="探亲假">
<ItemStyle Width="15px" />
</asp:BoundField>
<asp:BoundField HeaderText="年休假">
<ItemStyle Width="15px" Wrap="True" />
</asp:BoundField>
<asp:BoundField HeaderText="看护假">
<ItemStyle Width="15px" />
</asp:BoundField>
<asp:BoundField HeaderText="节育假">
<ItemStyle Width="15px" />
</asp:BoundField>
<asp:BoundField HeaderText="工伤假">
<ItemStyle Width="15px" />
</asp:BoundField>
<asp:BoundField HeaderText="迟到早退">
<ItemStyle Width="15px" />
</asp:BoundField>
<asp:BoundField HeaderText="本月扣分">
<ItemStyle Width="15px" />
</asp:BoundField>
<asp:BoundField HeaderText="累计扣分">
<ItemStyle Width="15px" />
</asp:BoundField>
<asp:BoundField HeaderText="摘要">
<ItemStyle Width="100px" />
</asp:BoundField>
</Columns>
<FooterStyle BackColor="#507CD1" Font-Bold="True" ForeColor="White" />
<RowStyle BackColor="#EFF3FB" />
<EditRowStyle BackColor="#2461BF" />
<SelectedRowStyle BackColor="#D1DDF1" Font-Bold="True" ForeColor="#333333" />
<PagerStyle BackColor="#2461BF" ForeColor="White" HorizontalAlign="Center" />
<HeaderStyle BackColor="#507CD1" Font-Bold="True" ForeColor="White" />
<AlternatingRowStyle BackColor="White" />
</asp:GridView>
请问:第一列控件好像没有id,后台要怎样才能遍历gridview所有记录并获取第一列模板列"人员编码"的值,请大侠提供vb.net后台代码