GridView中如何取得隐藏列的值？

直接对 <asp:BoundField  隐藏列取值不行，改用模板列实现

<asp:TemplateField Visible="false">
                    <ItemTemplate>
                        <asp:label ID="lblTask" runat="server" Text='<%# Eval("task_status") %>' />
                    </ItemTemplate>
            </asp:TemplateField>

然后，

protected void SmartGrid_RowDataBound(object sender, GridViewRowEventArgs e)
    }