"kpax" <someone@somewhere.com> wrote in message
news:%23nRqbqxzFHA.3896@TK2MSFTNGP10.phx.gbl...
> 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
>
>
>