รับค่าจาก Child repeater มาบันทึกลงฐานข้อมูลไม่ได้ เหมือนไม่มีค่าส่งมาด้วย

<asp:Repeater id="parentRepeater" runat="server">         
            <itemtemplate>
                <b><%# DataBinder.Eval(Container.DataItem, "dailyheader_desc")%></b><br>
                
                <!-- start child repeater -->
                <asp:repeater id="childRepeater" runat="server" datasource='<%# ((DataRowView)Container.DataItem).Row.GetChildRows("myrelation") %>'>    
                    <itemtemplate>
                            <asp:CheckBox ID="ChkBoxDetail" runat="server" Text='<%# DataBinder.Eval(Container.DataItem, "[\"dailydtail_desc\"]")%>' /><br>
		            </itemtemplate>
                </asp:repeater>
                 <!-- end child repeater -->

            </itemtemplate>
        </asp:Repeater>

protected void btnSave_Click(object sender, EventArgs e)
    {
        Repeater objChildRepeater;
        foreach (RepeaterItem item in parentRepeater.Items)
        {
            objChildRepeater = ((Repeater)(item.FindControl("childRepeater")));
            if (!(objChildRepeater == null))
            {
                Label lblID = new Label();
                CheckBox ChkBoxDetail;
                int i;
                //foreach (RepeaterItem objChildItem in objChildRepeater.Items)
                for (i = 0; i <= objChildRepeater.Items.Count - 1; i++) 
                {
                    ChkBoxDetail = (CheckBox)objChildRepeater.Items[i].FindControl("ChkBoxDetail");
                    //CheckBox chkbx = ((CheckBox)objChildRepeater.Items[0].FindControl("ChkBoxDetail")) as CheckBox;
                    if (ChkBoxDetail.Checked)
                    {
                        this.lblText.Text = this.lblText.Text + "<br>" + lblID.Text;
                    }

                }
            }
        }
        //-----------------------------------------------------------------------------------------

    }