ASP.NET Using foreach loop with DataList on Submit

ASP.NET Using foreach loop with DataList on Submit
在送出之前將 DataList 的 Items 使用迴圈取出

HTML:

<form id="form1" runat="server">
<asp:DataList ID="DataList1" runat="server" Width="99.9%" RepeatDirection="Vertical">
                    <ItemStyle BorderWidth="1" />
                    <ItemTemplate>
                        <asp:HiddenField ID="hifDlobjectype_code" runat="server" Value="A1234" />
                    </ItemTemplate>
                </asp:DataList>

<asp:Button ID="btnSubmit" runat="server" Text="送出" Width="100px" OnClick="btnSubmit_Click" />
</form>

C#:

protected void btnSubmit_Click(object sender, EventArgs e)
        {
            try
            {
                DataList dl = DataList1;

                foreach (DataListItem dli in dl.Items)
                {
                    string hifDlobjectype_code = ((HiddenField)dli.FindControl("hifDlobjectype_code")).Value;
                }
            }
            catch (Exception)
            {

                throw;
            }
        }