如何在RowCommand中从Gridview中获取行标签的数据？

<asp:GridView ID="GridView1" runat="server" OnRowCommand="GridView1_RowCommand">
    <Columns>
        <asp:TemplateField>
            <ItemTemplate>
                <asp:Button ID="btnEdit" runat="server" Text="Edit" CommandName="Edit" CommandArgument='<%# Eval("ID") %>' />
            </ItemTemplate>
        </asp:TemplateField>
    </Columns>
</asp:GridView>

protected void GridView1_RowCommand(object sender, GridViewCommandEventArgs e)
{
    if (e.CommandName == "Edit")
    {
        string id = e.CommandArgument.ToString();
        // 根据行标签的数据执行相应的操作
    }
}