Hi,

I'm trying to implement deepbinding for my custom business objects.
I have written two custom classes:
   BindableObject which implements ICustomTypeDescriptor
   BindableCollection which inherits CollectionBase, ITypedList,
IListSource

Then for test I have created the following objects:
   Author (inherits from BindableObject) with properties Name, Birthday
   Book (inherits from BindableObject) with properties Name, PageCount,
Author, Auhors (inherits from BindableCollection)
   BookCollection (inherits from BindableCollection)

On a form, I put a DataGridView1 and BindingSource1 and set the DataSource
property of grid to BindingSource1.
Then I set the DataSource property of the BindingSource1 to my Book class
(through Add Project Data Source...).

My deep binding works until this point. I see the Author.Name,
Author.Birthday columns on the grid.

The problem is with the Authors property of Book class. Since it is a
collection I want to show the Authors of the selected book in another grid.
So I put another DataGridView2 and BindingSource2 component. This time I set
the DataSource property of BindingSource2 to BindingSource1 (master-detail).
But when I want to set the DataMember property of BindingSource2 as
"Authors" nothings comes to the list. I try to set it programmatically and
hope that it will find it at runtime, but this also does not work.

But I found that the problem comes from ICustomTypeDescriptor
implementation. If I do not implement this for my BindableObject class
(which is key of my deepbinding solution) I see the Authors in the
DataMember list of the BindingSource component.

Does anyone have idea about what can be the problem? If needed I can send my
test application...

Thanks in advance...

Ipek