Gridview 行更新不提供新值

我正在使用gridview的RowUpdate事件处理一个应用程序。我在列中使用templatefield，因此无法从gridview中的textboxws获取新值。如何从文本框中获取新值。以下是我在RowUpdate中的代码：

protected void gviewTemplate_RowUpdating(object sender, GridViewUpdateEventArgs e)
{
    gviewTemplate.EditIndex = -1;
    string rowNum = ViewState["ID"].ToString();
    Label lbl2 = (Label)gviewTemplate.Rows[e.RowIndex].FindControl("lblTemplateName");
    Label lbl1 = (Label)gviewTemplate.Rows[e.RowIndex].FindControl("lblUploaded");

    TextBox txtTempName = (TextBox)gviewTemplate.Rows[e.RowIndex].FindControl("txtTemplateName");
    TextBox txtHeading = (TextBox)gviewTemplate.Rows[e.RowIndex].FindControl("txtHeading");
    TextBox txtCoupon = (TextBox)gviewTemplate.Rows[e.RowIndex].FindControl("txtCouponText");
    TextBox txtBrand = (TextBox)gviewTemplate.Rows[e.RowIndex].FindControl("txtBrandName");
    TextBox txtSearchText = (TextBox)gviewTemplate.Rows[e.RowIndex].FindControl("txtSearch");
    TextBox txtDiscount = (TextBox)gviewTemplate.Rows[e.RowIndex].FindControl("txtDiscount");
    TextBox txtStartDt = (TextBox)gviewTemplate.Rows[e.RowIndex].FindControl("txtStartDt");
} 

我想从这些文本框中获取新值，但它总是给我旧值。是的，e.Newvalues没有给我任何东西。它总是空的。这是我的gridview设计的小摘录：

<asp:GridView runat="server" AutoGenerateColumns="False"  
                        ID="gviewTemplate" onrowdatabound="gviewTemplate_RowDataBound" DataKeyNames="F1"
                        onrowcommand="gviewTemplate_RowCommand" 
                        onrowediting="gviewTemplate_RowEditing" 
                        onrowcancelingedit="gviewTemplate_RowCancelingEdit" 
                        onrowupdating="gviewTemplate_RowUpdating" 
                        onrowdeleting="gviewTemplate_RowDeleting" 
                        onrowupdated="gviewTemplate_RowUpdated">
                        <Columns>
                            <asp:TemplateField HeaderText="Uploaded Image">
                            <EditItemTemplate>
                                <asp:LinkButton Text="Reload" runat="server" OnClick="lbtnReloadImage_Click" CommandName="reload" ID="lbtnReloadImage"></asp:LinkButton>
                            </EditItemTemplate>
                                <ItemTemplate>
                                    <table id="Table2" runat="server" width="100%" cellpadding="0" cellspacing="0" border="0">
                                        <tr>
                                            <td>
                                                <asp:Label Runat="server" Text='<%# Eval("Uploaded") %>' ID="lblUploaded"></asp:Label>
                                            </td>
                                        </tr>
                                    </table>
                                </ItemTemplate>
                            </asp:TemplateField>
                            <asp:TemplateField HeaderText="Template Name">
                                <ItemStyle VerticalAlign="Top" HorizontalAlign="Center" />
                                <EditItemTemplate>
                                    <asp:TextBox ID="txtTemplateName" Width="60" Runat="server" Text='<%# Eval("F1") %>'></asp:TextBox>
                                    <asp:RequiredFieldValidator ID="RequiredFieldValidator1" Runat="server" 
                                    ErrorMessage="You must provide a Product Name." ControlToValidate="txtTemplateName">*</asp:RequiredFieldValidator>
                                </EditItemTemplate>
                                <ItemTemplate>
                                    <table id="Table3" runat="server" width="100%" cellpadding="0" cellspacing="0" border="0">
                                        <tr>
                                            <td>
                                                <asp:Label ID="lblTemplateName" runat="server" Text='<%# Eval("F1") %>'></asp:Label>
                                            </td>
                                        </tr>
                                    </table>
                                </ItemTemplate>
                            </asp:TemplateField>
                            <asp:TemplateField HeaderText="Heading">
                                <ItemStyle VerticalAlign="Top" HorizontalAlign="Center" />
                                <EditItemTemplate>
                                    <asp:TextBox ID="txtHeading" Runat="server" Width="60" Text='<%# Eval("F2") %>'></asp:TextBox>
                                    <asp:RequiredFieldValidator ID="RequiredFieldValidator2" Runat="server" 
                                    ErrorMessage="You must provide a Product Name." ControlToValidate="txtHeading">*</asp:RequiredFieldValidator>
                                </EditItemTemplate>
                                <ItemTemplate>
                                    <table id="Table4" runat="server" width="100%" cellpadding="0" cellspacing="0" border="0">
                                        <tr>
                                            <td>
                                                <asp:Label ID="lblHeading" runat="server" Text='<%# Eval("F2") %>'></asp:Label>
                                            </td>
                                        </tr>
                                    </table>
                                </ItemTemplate>
                            </asp:TemplateField>
                            <asp:TemplateField HeaderText="Coupon Text">
                                <ItemStyle VerticalAlign="Top" HorizontalAlign="Center" />
                                <EditItemTemplate>
                                    <asp:TextBox ID="txtCouponText" Runat="server" Width="80" Text='<%# Bind("F3") %>'></asp:TextBox>
                                    <asp:RequiredFieldValidator ID="RequiredFieldValidator3" Runat="server" 
                                    ErrorMessage="You must provide a Product Name." ControlToValidate="txtCouponText">*</asp:RequiredFieldValidator>
                                </EditItemTemplate>
                                <ItemTemplate>
                                    <table id="Table5" runat="server" width="100%" cellpadding="0" cellspacing="0" border="0">
                                        <tr>
                                            <td>
                                                <asp:Label Runat="server" Text='<%# Bind("F3") %>' ID="lblCouponText"></asp:Label>
                                            </td>
                                        </tr>
                                    </table>
                                </ItemTemplate>
                            </asp:TemplateField>

有谁能告诉我如何从这些文本框中获取新值吗？

您需要将网格绑定为 如果不是的话，我会回来的 “捆绑

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如果不重新绑定GridView，请结束，如果页面未回发，请绑定它。

我该怎么做，我不知道如何接受答案