Master Child Display using Nested repeater C#/Oracle

[sydneyram]

I am trying to accomplish a Master Detail Display here.
The master item is ProductName and Child items are the details of the Product.
Example:
Dell Desktop V305
- Model: Black - 23877487y24y
- Mother Board - Intel ....
- RAM - 3 GB DDR
HP Printer
- Ink Jet C 7770
- 4 Catridge
- Return Policy: blah blah

The ProductName (Master) comes from one table and children come from another. They are linked by Inventory_Item_Id.

I am cleaning up someones code. so I am restricted to datareader and nested repeater.
Please help me with how to go about it.

thanks for the help in advance.

Here is the code I have done. I am able to show the product name but child elements is where I am having trouble.

[B].aspx [/B]
<asp:repeater id="rptProd" Runat="server"  OnItemDataBound="rptProducts_ItemDataBound">
<ItemTemplate>
        <tr>
                <td width=50% style="padding: 1px;  padding-left: 12px;">
                <%# DataBinder.Eval(Container.DataItem, "Product_Name")%>
                 <table class=invoiceSubItems width=100% style="margin-top: 8px; margin-bottom: 8px; <asp:literal id="litStyle" runat="server" />" cellpadding=0 cellspacing=0>
                <asp:Repeater id="rptDetails" runat="server">
                <ItemTemplate>
                  <tr>
                         <td class="invoiceSubLineItem" nowrap valign=top style="padding-left: 8px;"><%# DataBinder.Eval( Container.DataItem ,"ELEMENTTYPE" )%>:</td>
                        <td width=20px> </td>
                        <td class="invoiceSubLineItem" valign=top><%# DataBinder.Eval( Container.DataItem ,"ELEMENT" )%></td>
            </tr>
             </ItemTemplate>
             </asp:Repeater>
 </table>
                                                        </td>
                                                        <td align="center" width=25% valign=top style="padding: 1px;"><%# DataBinder.Eval(Container.DataItem, "Quantity")%></td>
                                                        <td align="right" width=25% valign=top style="padding: 1px; padding-right: 12px;"><%# DataBinder.Eval(Container.DataItem, "Price", "{0:c}")%></td>
                                                </tr>
                                        </ItemTemplate>
                                </asp:repeater>

[B]Code Behind:[/B]
 public void rptProducts_ItemDataBound(object sender, System.Web.UI.WebControls.RepeaterItemEventArgs e)
        {
            int IndexNow = e.Item.ItemIndex - 1;
            if (IndexNow >= 0 && rptProd.Items.Count > IndexNow)
            {
                Repeater nestedRepeater = (Repeater)rptProd.Items[IndexNow].FindControl("rptDetails");
                //This returns the Inventory Item Id that links the Master and Child Records\
                //The Child records need to be fetched uding the Inventory Item Id t
                OracleDataReader YourDr = getInventoryItemId();
                string[] tmpStr= new string[5];
                if (nestedRepeater != null)
                {
                    for(int i=0; i < getCountofInventoryItemId(); i++)
                    {
                    tmpStr[i]=YourDr[i].ToString();
                    OracleDataReader dr = BundleSpec(tmpStr[i]);
                    nestedRepeater.DataSource = YourDr;
                    nestedRepeater.DataBind();
                    }
                }
            }

///Method calls used inside the ItemBound Event
  public int getCountofInventoryItemId()
        {
            int countOfItems;
            OracleConnection con = new OracleConnection();
            OrderEntry.Components.DAL.Database.CheckState(con);
            string strInventoryItemId = "SELECT COUNT(INVENTORY_ITEM_ID) FROM ORDER_DETAIL WHERE ORDER_ID ='{0}'";
            string ID = Convert.ToString(Request["ID"].Trim());
            strInventoryItemId = string.Format(strInventoryItemId, ID);
            string countRdr = OrderEntry.Components.DAL.Database.GetOracleScalar(strInventoryItemId);
            countOfItems = Convert.ToInt16(countRdr);
            return countOfItems;
       
        }
        public OracleDataReader getInventoryItemId()
        {
            OracleConnection con = new OracleConnection();
            OrderEntry.Components.DAL.Database.CheckState(con);
            string strInventoryItemId = "SELECT DISTINCT INVENTORY_ITEM_ID FROM ORDER_DETAIL WHERE ORDER_ID ='{0}'";
            string ID = Convert.ToString(Request["ID"].Trim());
            strInventoryItemId = string.Format(strInventoryItemId, ID);
            return OrderEntry.Components.DAL.Database.GetOracleDataReader(strInventoryItemId);
        }
       public OracleDataReader ProductName()
        {
            OracleConnection con = new OracleConnection();
            OrderEntry.Components.DAL.Database.CheckState(con);
            string strProductName= "SELECT PRODUCT_NAME,QUANTITY,PRICE,INVENTORY_ITEM_ID FROM ORDER_DETAIL WHERE ORDER_ID ='{0}'";
            string ID = Convert.ToString(Request["ID"].Trim());
            strProductName = string.Format(strProductName, ID);
            return OrderEntry.Components.DAL.Database.GetOracleDataReader(strProductName, con);
        }
       public OracleDataReader BundleSpec(string INV_ID)
        {
            string ID = Convert.ToString(INV_ID);
            OracleConnection con = new OracleConnection();
            OrderEntry.Components.DAL.Database.CheckState(con);
            string inv_sql = "SELECT ELEMENTTYPE, ELEMENT FROM PPC_TREE_BUNDLE_ELEMENTS WHERE INVENTORY_ITEM_ID = '{0}' ORDER BY SORT_ORDER";
            inv_sql = string.Format(inv_sql, ID);
            return OrderEntry.Components.DAL.Database.GetOracleDataReader(inv_sql, con);
        }

Thanks for all your help!