Prgramatically set ParameterBindings for To DataFormWebparts on the Same Page.

Question

I have an External List Called TTOrderbook. One of the Columns on the External List is called AmendedOrderID.  Its the Key of another TTOrderbook, to which this Order TTOrderbook.  (i'e a self referencing table)
So I need to create a SitePage that Shows a 2 TTOrderbook record The 'Main'' one and the  'Amended' One. When the Page is loaded it gets passed a parameter which is the BDCID of the 'Main Order.
I create  a site page in my Visuaal Studio Project and drop  in Two Webpartzones and add a DataformWebpart to each Zone. like this:(XSL left out for brevity)
<asp:Content ContentPlaceHolderId="PlaceHolderMain" runat="server">
<table>
<tr>
<td>
<WebPartPages:WebPartZone runat="server" FrameType="None" ID="wpzMainOrder" Title="MainOrder">
<ZoneTemplate>
<WebPartPages:DataFormWebPart runat="server" IsIncluded="True" NoDefaultStyle="TRUE" ViewFlag="8" Title="New Order/Amendment"
PageType="PAGE_DISPLAYFORM"
Default="FALSE" DisplayName="dfwpMainOrder"
partorder="1" id="dfwpMainOrder">
<DataSources>
<SharePoint:SPDataSource runat="server" DataSourceMode="ListItem" UseInternalName="true" UseServerDataFormat="True"
selectcommand="&lt;View&gt;&lt;/View&gt;" id="SPDataSourceNainOrder">
<SelectParameters>
<WebPartPages:DataFormParameter Name="ListItemId" ParameterKey="ListItemId" PropertyName="ParameterValues" DefaultValue="0"/>
<WebPartPages:DataFormParameter Name="ListID" ParameterKey="ListID" PropertyName="ParameterValues" />
<WebPartPages:DataFormParameter Name="MaximumRows" ParameterKey="MaximumRows" PropertyName="ParameterValues" DefaultValue="10"/>
</SelectParameters>
</SharePoint:SPDataSource>
</DataSources>
<ParameterBindings>
<ParameterBinding Name="ListItemId" Location="QueryString(ID)" DefaultValue="{{orderID}}"/>
<ParameterBinding Name="ListID" Location="None" DefaultValue="{{listID}}"/>
<ParameterBinding Name="MaximumRows" Location="None" DefaultValue="10"/>
<ParameterBinding Name="dvt_apos" Location="Postback;Connection"/>
<ParameterBinding Name="ManualRefresh" Location="WPProperty[ManualRefresh]"/>
<ParameterBinding Name="UserID" Location="CAMLVariable" DefaultValue="CurrentUserName"/>
<ParameterBinding Name="Today" Location="CAMLVariable" DefaultValue="CurrentDate"/>
</ParameterBindings>
<datafields>@BdcIdentity,BDC Identity;@ID,Order ID;@Type,Type;@ArbitrageName,ArbitrageName;@HedgedTradeID,HedgedTradeID;@Customer,Customer;@Portfolio,Portfolio;@BS,BS;@Entity,Entity;@Entity2,Entity2;@Product,Product;@Contract,Contract;@Contract2,Contract2;@Commodity,Commodity;@Lots,Lots;@LotsFilled,Lots Filled;@LotsRemaining,Lots Remaining;@Price,Price;@GoodTillType,Good Til Type;@GoodTill,Good Until;@Broker,Broker;@Status,Status;@Notes,Notes;@NearDate,Near Date;@FarDate,Far Date;@Created,Created;@Updated,Updated;@CreatedBy,CreatedBy;@UpdatedBy,UpdatedBy;@Maturity,Maturity;@TakenBy,Taken By;@TakenTime,Taken Time;@Adjustment,Adjustment;@PricingBasis,Pricing Basis;@CustomPricingBasis,Custom Pricing Basis;@Requestor,Requestor;@PriceMultiplier,PriceMultiplier;@LotsMultiplier,LotsMultiplier;@AmendedOrderID,AmendedOrderID;</datafields>
<XSL>
</XSL>
</WebPartPages:DataFormWebPart>
</ZoneTemplate>
</WebPartPages:WebPartZone>
</td>
<td>
<WebPartPages:WebPartZone runat="server" FrameType="None" ID="wpzAmendedOrder" Title="AmendedOrder">
<ZoneTemplate>
<WebPartPages:DataFormWebPart runat="server" IsIncluded="True" NoDefaultStyle="TRUE" ViewFlag="8" Title="Amended Order"
PageType="PAGE_DISPLAYFORM"
Default="FALSE" DisplayName="dfwpAmendedOrder"
partorder="2" id="dfwpAmendedOrder">
<DataSources>
<SharePoint:SPDataSource runat="server" DataSourceMode="ListItem" UseInternalName="true" UseServerDataFormat="True"
selectcommand="&lt;View&gt;&lt;/View&gt;" id="SPDataSourceAmendedOrder">
<SelectParameters>
<WebPartPages:DataFormParameter Name="ListItemId" ParameterKey="ListItemId" PropertyName="ParameterValues" DefaultValue="0"/>
<WebPartPages:DataFormParameter Name="ListID" ParameterKey="ListID" PropertyName="ParameterValues" />
<WebPartPages:DataFormParameter Name="MaximumRows" ParameterKey="MaximumRows" PropertyName="ParameterValues" DefaultValue="10"/>
</SelectParameters>
</SharePoint:SPDataSource>
</DataSources>
<ParameterBindings>
<ParameterBinding Name="ListItemId" Location="QueryString(ID)" DefaultValue="{{orderID}}"/>
<ParameterBinding Name="ListID" Location="None" DefaultValue="{{listID}}"/>
<ParameterBinding Name="MaximumRows" Location="None" DefaultValue="10"/>
<ParameterBinding Name="dvt_apos" Location="Postback;Connection"/>
<ParameterBinding Name="ManualRefresh" Location="WPProperty[ManualRefresh]"/>
<ParameterBinding Name="UserID" Location="CAMLVariable" DefaultValue="CurrentUserName"/>
<ParameterBinding Name="Today" Location="CAMLVariable" DefaultValue="CurrentDate"/>
</ParameterBindings>
<datafields>@BdcIdentity,BDC Identity;@ID,Order ID;@Type,Type;@ArbitrageName,ArbitrageName;@HedgedTradeID,HedgedTradeID;@Customer,Customer;@Portfolio,Portfolio;@BS,BS;@Entity,Entity;@Entity2,Entity2;@Product,Product;@Contract,Contract;@Contract2,Contract2;@Commodity,Commodity;@Lots,Lots;@LotsFilled,Lots Filled;@LotsRemaining,Lots Remaining;@Price,Price;@GoodTillType,Good Til Type;@GoodTill,Good Until;@Broker,Broker;@Status,Status;@Notes,Notes;@NearDate,Near Date;@FarDate,Far Date;@Created,Created;@Updated,Updated;@CreatedBy,CreatedBy;@UpdatedBy,UpdatedBy;@Maturity,Maturity;@TakenBy,Taken By;@TakenTime,Taken Time;@Adjustment,Adjustment;@PricingBasis,Pricing Basis;@CustomPricingBasis,Custom Pricing Basis;@Requestor,Requestor;@PriceMultiplier,PriceMultiplier;@LotsMultiplier,LotsMultiplier;@AmendedOrderID,AmendedOrderID;</datafields>
<XSL>
</XSL>
</WebPartPages:DataFormWebPart>
</ZoneTemplate>
</WebPartPages:WebPartZone>
</td>
</tr>
</table>
</asp:Content>
and then in the codeBehind for my page I set the ListID and OrderID for the two webparts programmatically like this
protected void Page_Load(object sender, EventArgs e)
WebPartManager wpm = SPWebPartManager.GetCurrentWebPartManager(this.Page);
dfwpMainOrder = (DataFormWebPart)wpm.WebParts["dfwpMainOrder"];
dfwpAmendedOrder = (DataFormWebPart)wpm.WebParts["dfwpAmendedOrder"];
//dfwpMainOrder = (DataFormWebPart)Page.Master.FindControl("PlaceHolderMain").FindControl("wpzMainOrder").FindControl("dfwpMainOrder");
//dfwpAmendedOrder = (DataFormWebPart)Page.Master.FindControl("PlaceHolderMain").FindControl("wpzAmendedOrder").FindControl("dfwpAmendedOrder");
// Set up the Main Dataform
string bdcid = Page.Request.QueryString["id"];
mainOrderID = Convert.ToInt32((Microsoft.SharePoint.BusinessData.Infrastructure.EntityInstanceIdEncoder.DecodeEntityInstanceId(bdcid)[0]));
dfwpMainOrder.ListId = FixPortalLists.TTOrderBook.List.ID;
dfwpMainOrder.ParameterBindings = dfwpMainOrder.ParameterBindings.Replace("{{orderID}}", mainOrderID.ToString());
dfwpMainOrder.ParameterBindings = dfwpMainOrder.ParameterBindings.Replace("{{listID}}", FixPortalLists.TTOrderBook.List.ID.ToString("B"));
SPListItem mainOrder = FixPortalLists.TTOrderBook.GetItemByDBID(mainOrderID);
// Ifits an Amendment, set up the second Dataform
if (mainOrder["AmendedOrderID"] != null)
amendedOrderID = (int)mainOrder["AmendedOrderID"];
dfwpAmendedOrder.ListId = FixPortalLists.TTOrderBook.List.ID;
dfwpAmendedOrder.ParameterBindings = dfwpAmendedOrder.ParameterBindings.Replace("{{orderID}}", amendedOrderID.ToString());
dfwpAmendedOrder.ParameterBindings = dfwpAmendedOrder.ParameterBindings.Replace("{{listID}}", FixPortalLists.TTOrderBook.List.ID.ToString("B"));
else
// need to abourt loading of the secon dfwp
dfwpAmendedOrder.Enabled = false;
When I step thru debugging I can See that I am assigning a DIFFERENT OrderID to each of the webparts. But They Are both showing the  SAME record, 
I did a Database Trace and can see that the SAME record is getting requested from the database TWICE.
I'm on SP2010 SP1. Using VS2012.
How can I resolve this?

Answer 1

I Fugured it out.
I was passing in the order id using a parameter called ID. Both DFWPs were picking this up and using it to get the listitem. I changed the Parameter name To Order ID so that the DFWPS would not see it and changed  the Parameter bindings to pass in the
BDC id instead of the database id.
Its working now.