GridView中如何获取TemplateField中的值?

GridView中如何获取TemplateField中的值? <asp:GridView ID="GridView1" runat="server" OnSorting="GridView1_Sorting" OnRowCreated="GridView1_RowCreated" >
                <Columns>                                    
                    <asp:BoundField HeaderText="编号" SortExpression="编号" DataField="编号" />
                    <asp:BoundField HeaderText="单位" SortExpression="单位" DataField="单位" />                     
                    <asp:TemplateField SortExpression="名称" HeaderText="名称">
                        <ItemTemplate>
                            <a href="aa.aspx?ID=<%#Eval("ID")%>" title="<%#Eval("名称")%>" ><%#Eval("名称")%></a>
                        </ItemTemplate>
                    </asp:TemplateField>                                    
                </Columns>
            </asp:GridView>如上代码,BoundField 可以用GridView1.Rows[i].Cells[].Text获得,但TemplateField 就不能获得单元格的值.救助!!