CF 2.0: INotifyPropertyChanged doesn't behave good with ListBox

[Carmine Moleti]

Hi to everyone,

I've faced, and found a workaround, for the following problem:

1. Having a collection of objects implemented through BindingList<OrderRow>

2. OrderRow implements INotifyPropertyChanged to track changes to
properties, in particular to the quantity one.

The collection is bound to a ListBox via BindingSource.

When I add/remove items from the collection, the listbox gets updated
the correct way.

If I add the same objects multiple times to the collection the listbox
updates _only_ the quantity of the object displayed on the first row!

E.g.:

Nr. 1 - My first row
Nr. 1 - My second row

Adding another 1 quantity of "My first row" produces:

Nr. 2 - My first row
Nr. 1 - My second row

This holds true for each quantity of "My first row" added.

Adding another 1 quantity of "My second row" produces:

Nr. 2 - My first row
Nr. 1 - My second row

During debug I found the quantities gets updated correctly in the
collection.

Also, after struggling, found that replacing the listbox with a datagrid
solved the problem.

What's wrong with ListBox?

Thanks for your help.
Regards,
Carmine

 

[Ilya Tumanov [MS]]

For starters please try picking up NETCF SP1 which has updated
implementation for BindingList<T>.



I would also recommend you stick with data grid instead of listbox. Listbox
would make a copy of your entire data and is way slower.


http://forums.microsoft.com/MSDN/ShowPost.aspx?PostID=610234&SiteID=1

--
Best regards,

Ilya

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[Carmine Moleti]

First off, thanks a lot Ilya!

I've downloaded the SP1, thanks!

I would also recommend you stick with data grid instead of listbox. Listbox
would make a copy of your entire data and is way slower.

Can you suggest me any book about CF (better if about 2.0), please?

Thanks for your help.