Save not working if Entity is DataSource of a BindingSource

I emailed a visual studio solution that demonstrates the problem to IdeaBladeSupportTrack@ideablade.com, referencing task #5550 in the subject line.

Yes, it is an integer field set as auto increment in the object mapper.

I also noticed that the server is trying to save the entity twice when I called .SaveChanges() just once on the client. This behavior changes when I do not set the DataSource property of the binding source. The 'Vendors to be Modified: 1' log entry only shows up once.

I made sure the model on the server and the client were the same version by rebuilding all and deploying to the BOS directory.
I checked the version of the IdeaBlade dlls on the client and the server and they are correct (5.1.1.0 and 3.6.7.1)

Here is the simple Windows Forms program I am using (Sorry for the bad formatting):

If I comment out the line that assigns the _vendor to the DataSource property then everything works.

public partial class Form1 : Form

{

DomainModelEntityManager _em = new DomainModelEntityManager(true, "Dev");

Vendor _vendor;

public Form1()

{

InitializeComponent();

IdeaBladeConfig idconfig = IdeaBladeConfig.Instance;

ObjectServerElement osel = idconfig.ObjectServer;

osel.ServerPort = 9009;

osel.RemoteBaseUrl = "http://citybots-dev.citybots.com";

LoginCredential lc = new LoginCredential("xxx", "xxx", "dev");

_em.Login(lc);

_vendor = _em.Vendors.Where(vendor => vendor.AutoId == 2560).FirstOrNullEntity();

this.txtVendorName.Text = _vendor.Name;

bindingSource1.DataSource = _vendor;

}

private void btnSave_Click(object sender, EventArgs e)

{

_vendor.Name = this.txtVendorName.Text;

_em.SaveChanges();

}

private void btnExit_Click(object sender, EventArgs e)

{

this.Close();

}

Here is the debug log from the server:

2009-06-24	08:11:43	gwinn@winns.us	IdeaBlade.EntityModel.Server	EntityServer::Fetch	Fetch ... value(IdeaBlade.EntityModel.EntityQueryProxy`1[DomainModel.Vendor]).Where(vendor => (vendor.AutoId = 2560)).FirstOrDefault()
2009-06-24	08:11:43	gwinn@winns.us	IdeaBlade.EntityModel.Edm	ObjectQueryProcessor::WriteGeneratedSql	SELECT 1 AS [C1], [Extent1].[Id] AS [Id], [Extent1].[AutoId] AS [AutoId], [Extent1].[EId] AS [EId], [Extent1].[Name] AS [Name], [Extent1].[Creator] AS [Creator], [Extent1].[CreateDate] AS [CreateDate], [Extent1].[LastUpdater] AS [LastUpdater], [Extent1].[LastUpdate] AS [LastUpdate], [Extent1].[RowVersion] AS [RowVersion], [Extent1].[DoingBusinessAs] AS [DoingBusinessAs], [Extent1].[TaxId] AS [TaxId], [Extent1].[BusinessDescription] AS [BusinessDescription], [Extent1].[SessionId] AS [SessionId], [Extent1].[IsDeleted] AS [IsDeleted], [Extent1].[CertString] AS [CertString], [Extent1].[EthnicGroup] AS [EthnicGroup], [Extent1].[Gender] AS [Gender], [Extent1].[VendorType] AS [VendorType], [Extent1].[IngressMethod] AS [IngressMethod], [Extent1].[FeedSource] AS [FeedSource] FROM [dbo].[Vendor] AS [Extent1] WHERE 2560 = [Extent1].[AutoId]
2009-06-24	08:11:47	gwinn@winns.us	IdeaBlade.EntityModel.Server	EntityServer::GetInstanceImplementing	Unable to locate an implementation of: IdeaBlade.EntityModel.IEntityServerSaving
2009-06-24	08:11:47	gwinn@winns.us	IdeaBlade.EntityModel.Server	EdmSaveHelper::<TraceChanges>b__4f	Vendors to be Modified: 1
2009-06-24	08:11:58	gwinn@winns.us	IdeaBlade.EntityModel.Server	EntityServer::GetInstanceImplementing	Unable to locate an implementation of: IdeaBlade.EntityModel.IEntityServerSaved
2009-06-24	08:11:58	gwinn@winns.us	IdeaBlade.EntityModel.Server	EdmSaveHelper::<TraceChanges>b__4f	Vendors to be Modified: 1
2009-06-24	08:11:58	gwinn@winns.us	IdeaBlade.EntityModel.Server	EdmSaveHelper::Save	Entity Save Error: System.Data.OptimisticConcurrencyException: Store update, insert, or delete statement affected an unexpected number of rows (0). Entities may have been modified or deleted since entities were loaded. Refresh ObjectStateManager entries. at System.Data.Mapping.Update.Internal.UpdateTranslator.Update(IEntityStateManager stateManager, IEntityAdapter adapter) at System.Data.EntityClient.EntityAdapter.Update(IEntityStateManager entityCache) at System.Data.Objects.ObjectContext.SaveChanges(Boolean acceptChangesDuringSave) at System.Data.Objects.ObjectContext.SaveChanges() at IdeaBlade.EntityModel.Server.EdmSaveHelper.Save()

I just upgraded to 5.1.1 and am now having problems saving an entity that is a data source for a System.Windows.Forms.BindingSource. The code was working fine until I upgraded. I am using the BindingSource with a ControlBindingManager.

The exception is :

EntityManagerSaveException:

An error occurred while receiving the HTTP response to http://citybots-dev.citybots.com:9009/EntityServer. This could be due to the service endpoint binding not using the HTTP protocol. This could also be due to an HTTP request context being aborted by the server (possibly due to the service shutting down). See server logs for more details.