GuyThornton
Thu Jul 06 06:41:02 CDT 2006
It would be nice if I could get someone from Microsoft to help out with this
question. The only way I have been able to figure out how to make this work,
is to create a strongly typed collection
"Guy Thornton" wrote:
> Thanks for the information. I will see what I can work out.
>
> "sloan" wrote:
>
> >
> > Here's an example I found.
> >
> >
http://www.vb-helper.com/howto_net_sort_dataset_collection.html
> >
> > I don't know of a C# example offhand. ( I had that one in my old bookmarks)
> >
> >
> >
> > "sloan" <sloan@ipass.net> wrote in message
> > news:%23h83U0DoGHA.3348@TK2MSFTNGP03.phx.gbl...
> > >
> > > I ~think you need a default contructor.
> > > And I think items in your Collection, have to implment the IEditable
> > object.
> > >
> > > Buts its been over a year since I last did it, so I can't be authoratative
> > > with these answers.
> > >
> > >
> > >
> > > "Guy Thornton" <GuyThornton@discussions.microsoft.com> wrote in message
> > > news:3CE948E1-77AA-4A01-BD16-790E59E947AF@microsoft.com...
> > > > I should have be more specific in my description, I have implemented my
> > > own
> > > > Collection class that implements IList, IBindingList, and ICollection
> > > > interaces. I looked at the IEditableObject interace, but am not seeing
> > > how
> > > > this will correct my problem. It seems that the IEditableObject
> > interface
> > > is
> > > > more responsible for managing changes to an object and either committing
> > > or
> > > > discarding those changes when an edit begins or is cancelled. I will
> > > > probably need to get to that task next, but for now, I just want return
> > > the
> > > > correct type of object when a "new" is clicked by the user. Does the
> > > > IEditableObject interface handle new object as well?
> > > >
> > > > "sloan" wrote:
> > > >
> > > > > Do a google search for
> > > > > IEditableObject.
> > > > >
> > > > >
http://www.google.com/search?hl=en&q=IEditableObject
> > > > >
> > > > > Its not trivial.... I usually go with a strongly typed dataset for
> > this
> > > > > specific reason. (the work involved with implmenting IEditableObject)
> > > > >
> > > > >
> > > > > "Guy Thornton" <GuyThornton@discussions.microsoft.com> wrote in
> > message
> > > > > news:3659FE33-7008-41C5-B0CC-529232117D41@microsoft.com...
> > > > > > I have an application that is using Datagrids to display a
> > collection
> > > of
> > > > > > objects (.Net 1.x, VB.Net environment using Collection Object). The
> > > > > > Collection Object, lets say holds a collection of Customer Objects.
> > > > > > I want the datagrid to be editable, so that users can enter data
> > > through
> > > > > the
> > > > > > grid and have it update properties of the specific Customer object.
> > > > > >
> > > > > > Also I need for when the users clicks the new row in the datagrid
> > that
> > > the
> > > > > > Collection adds a new Customer object to it. The problem I am
> > having
> > > is
> > > > > that
> > > > > > when I click the new row in datagrid, I get a system.dll exception.
> > > > > >
> > > > > > What I see happening is that when new is clicked in the datagrid,
> > the
> > > > > > collection class returns a New Object(). Is there an event or
> > > property
> > > > > that
> > > > > > I need to implement on my Customer Objects so that it will
> > understand
> > > the
> > > > > > datagrids request for a new object?
> > > > >
> > > > >
> > > > >
> > >
> > >
> >
> >
> >