data portal related issue

The handlers will be lost during serialization / de-serialization process.  You will need to re-establish them after de-serialization.

 

Sergey Barskiy

Principal Consultant

office: 678.405.0687 | mobile: 404.388.1899

Microsoft Worldwide Partner of the Year | Custom Development Solutions, Technical Innovation

 

 

Hello:

I am a member of a team using CSLA 1.3 to develop an application and was hoping for some insight into the following issue . . .

An invoice object (inherets from BusinessBase) has a child InvoiceLineItemCollection.  Each time the InvoiceLineItemCollection is set, code is called that registers event handers:

public void GetInvoiceLineItemCollection()
{
      // Code that creates criteria object
      Criteria criteria = new Criteria()
      etc.

      // Code that sets invoice line item collection.
      _invoiceLineItemCollection =   InvoiceLineItemCollection.GetInvoiceLineItemCollection(Criteria);
      RegisterChildEventHandlers();
}

private void RegisterChildEventHandlers()
{
      _invoiceLineItemCollection.ListChanged+=new System.ComponentModel.ListChangedEventHandler(ChildCollection_ListChanged);
}

During runtime, the ChildCollection_ListChanged method does not execute when the InvoiceLineItem collection is changed.  This problem does not occur when the application accesses the database directly . . . only when the data portal is used.

Any thoughts on why this may be happening?

Thanks!
Chris 

I see. Does Invoice.GetInvoice() call data portal?

 

Sergey Barskiy

Principal Consultant

office: 678.405.0687 | mobile: 404.388.1899

Microsoft Worldwide Partner of the Year | Custom Development Solutions, Technical Innovation

 

 

Thanks for the quick reply Sergey.

Serialization doesn't appear to be the problem because the issue occurs prior to the invoice object being saved.  For example:

Invoice invoice = Invoice.GetInvoice(1);
invoice.GetInvoiceLineItemCollection()

// This line of code does not cause ChildCollection_ListChanged method to execute.
invoice.InvoiceLineItemCollection[0].Notes = "x";

Chris

Then you need to re-attach your events because Fetch process will break them just as Save would.

 

Sergey Barskiy

Principal Consultant

office: 678.405.0687 | mobile: 404.388.1899

Microsoft Worldwide Partner of the Year | Custom Development Solutions, Technical Innovation

 

 

Yes, Invoice.GetInvoice() calls the data portal as does Invoice.GetInvoiceLineItemCollection().

Thanks,
Chris