(论坛答疑点滴)有的时候DataGrid取值取不到？

有的时候想取不是编辑状态的值，这个时候通常不会使用模板列中放置TextBox通过e.Item.FindControl取值，有的网友问为什么取不到？这要看你前台的列怎么写的了，下面分别写出四种情况和这四种情况下面的取值方式：

<asp:DataGrid id="DataGrid1" runat="server" AutoGenerateColumns="False" AllowPaging="True">
                <Columns>
                    <asp:BoundColumn DataField="vName" HeaderText="姓名0"></asp:BoundColumn>
                    <asp:TemplateColumn HeaderText="姓名1">
                        <ItemTemplate>
                            姓名
                        </ItemTemplate>
                    </asp:TemplateColumn>
                    <asp:TemplateColumn HeaderText="姓名2">
                        <ItemTemplate>
                            <%#DataBinder.Eval(Container.DataItem,"vName")%>
                        </ItemTemplate>
                    </asp:TemplateColumn>
                    <asp:TemplateColumn HeaderText="姓名3">
                        <ItemTemplate>
                            <asp:Label ID="name" Runat="server" Text='<%#DataBinder.Eval(Container.DataItem,"vName")%>'>
                            </asp:Label>
                        </ItemTemplate>
                    </asp:TemplateColumn>
                    <asp:ButtonColumn Text="删除" ButtonType="PushButton" CommandName="del"></asp:ButtonColumn>
                </Columns>
            </asp:DataGrid>

if(e.CommandName=="del")
            {
                Response.Write(DataGrid1.Columns[0].HeaderText+":"+e.Item.Cells[0].Text+"<br>");
                Response.Write(DataGrid1.Columns[1].HeaderText+":"+e.Item.Cells[1].Text.Trim()+"<br>");
                Response.Write(DataGrid1.Columns[2].HeaderText+":"+((DataBoundLiteralControl)e.Item.Cells[2].Controls[0]).Text.Trim()+"<br>");
                Response.Write(DataGrid1.Columns[3].HeaderText+":"+((Label)e.Item.Cells[3].FindControl("name")).Text+"<br>");                
            }