为什么无法在GridView中更改编辑和删除按钮的显示？

<asp:GridView ID="GridView1" runat="server" AutoGenerateEditButton="false" AutoGenerateDeleteButton="false">

<asp:GridView ID="GridView1" runat="server" AutoGenerateEditButton="false" AutoGenerateDeleteButton="false">
    <Columns>
        <asp:TemplateField>
            <ItemTemplate>
                <asp:Button ID="EditButton" runat="server" Text="Edit" CommandName="Edit" />
                <asp:Button ID="DeleteButton" runat="server" Text="Delete" CommandName="Delete" />
            </ItemTemplate>
        </asp:TemplateField>
    </Columns>
</asp:GridView>

protected void GridView1_RowCommand(object sender, GridViewCommandEventArgs e)
{
    if (e.CommandName == "Edit")
    {
        // 编辑按钮点击事件处理逻辑
    }
    else if (e.CommandName == "Delete")
    {
        // 删除按钮点击事件处理逻辑
    }
}