如何从asp webform gridview获取数据id

<asp:GridView ID="GridView1" runat="server" DataKeyNames="ID" OnRowDataBound="GridView1_RowDataBound" AutoGenerateColumns="false">
    <Columns>
        <asp:BoundField DataField="Name" HeaderText="Name" />
        <asp:TemplateField>
            <ItemTemplate>
                <asp:Button ID="btnEdit" runat="server" Text="Edit" CommandName="Edit" />
                <asp:Button ID="btnDelete" runat="server" Text="Delete" CommandName="Delete" />
            </ItemTemplate>
        </asp:TemplateField>
    </Columns>
</asp:GridView>

protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
{
    if (e.Row.RowType == DataControlRowType.DataRow)
    {
        int id = Convert.ToInt32(DataBinder.Eval(e.Row.DataItem, "ID"));
        Button btnEdit = (Button)e.Row.FindControl("btnEdit");
        Button btnDelete = (Button)e.Row.FindControl("btnDelete");

        btnEdit.CommandArgument = id.ToString();
        btnDelete.CommandArgument = id.ToString();
    }
}

protected void GridView1_RowCommand(object sender, GridViewCommandEventArgs e)
{
    if (e.CommandName == "Edit")
    {
        int id = Convert.ToInt32(e.CommandArgument);
        // 处理编辑操作
    }
    else if (e.CommandName == "Delete")
    {
        int id = Convert.ToInt32(e.CommandArgument);
        // 处理删除操作
    }
}