DevForce Community Forum : Deleting Objects http://www.ideablade.com/forum/ This is an XML content feed of; DevForce Community Forum : DevForce 2010 : Deleting Objects Wed, 29 Jul 2026 10:06:17 -700 Tue, 30 Nov 2010 02:59:57 -700 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 9.69 360 www.ideablade.com/forum/RSS_post_feed.asp?TID=2306 DevForce Community Forum http://www.ideablade.com/forum/forum_images/IdeaBlade_logo_tm.png http://www.ideablade.com/forum/ Deleting Objects : Thank you all for encouraging... http://www.ideablade.com/forum/forum_posts.asp?TID=2306&PID=9273#9273 Author: amourrashid
Subject: 2306
Posted: 30-Nov-2010 at 2:59am

Thank you all for encouraging me.
     Actually what I have concluded is that DevForce seems more geared to WPF and Silverlight. This is undeniable. My solution is in Windows forms where even the examples are very scarce nowadays.

I will try to contact devexpress where I have a universal subscription and they respond very quickly.

Thank you all.
]]> Tue, 30 Nov 2010 02:59:57 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=2306&PID=9273#9273 Deleting Objects : Hi amourrashid, Sorry it took... http://www.ideablade.com/forum/forum_posts.asp?TID=2306&PID=9194#9194 Author: sbelini
Subject: 2306
Posted: 22-Nov-2010 at 10:31am

Hi amourrashid,
 
Sorry it took long to get back to you.
 
Like jsobell mentioned, it doesn't look like you are implementing OnPropertyChanged.
 
I'd suggest having an ObservableCollection<Contracts> so you can add support for PropertyChanged in your app.
 
You will find a few examples in our DevForce Resource Center (like in here and here) that make use of the PropertyChanged event.
 
Regards,
   sbelini.
]]> Mon, 22 Nov 2010 10:31:52 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=2306&PID=9194#9194 Deleting Objects : These forums are for the free... http://www.ideablade.com/forum/forum_posts.asp?TID=2306&PID=9187#9187 Author: jsobell
Subject: 2306
Posted: 22-Nov-2010 at 1:16am

These forums are for the free product, and when they are busy responding to registered users it sometimes gets quiet on the 'free advice' front.
Your problem is third party control related and not specific to DevForce, so perhaps you should try posting your question on the DevExpress forums. The handling of the entities, cached or not, is completely standard in DevForce, as they are simply standard .NET objects. If you have the problem here you will also have it with RIA (only it will probably be much harder to solve).
I notice in your code that you never save the collection of entities to a local collection, so I don't understand how you are ever calling the INotifyPropertyChanged on that results collection.
 
Look at some examples, read the sample code supplied, and resolve what appears to be a pretty simple problem yourself. As I've always found, solving your own problem in 30mins is quicker than waiting an indeterminate time for support response.
]]> Mon, 22 Nov 2010 01:16:50 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=2306&PID=9187#9187 Deleting Objects : A total disappointment.I have... http://www.ideablade.com/forum/forum_posts.asp?TID=2306&PID=9186#9186 Author: amourrashid
Subject: 2306
Posted: 21-Nov-2010 at 10:59pm

A total disappointment.

I have been trying to convince my manager to go with devforce but there are still things that set me down.

It is really painful. The support......
]]> Sun, 21 Nov 2010 22:59:46 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=2306&PID=9186#9186 Deleting Objects : Thanks, I have an XtraGrid that... http://www.ideablade.com/forum/forum_posts.asp?TID=2306&PID=9132#9132 Author: amourrashid
Subject: 2306
Posted: 16-Nov-2010 at 5:41am

Thanks,
   I have an XtraGrid that is bound to a binding Source.
When the form loads I call something like this

var query=_manager.Contracts;
var op=query.ExecuteAsync();
op.Completed+=op_Completed;



And the op_Completed is like this

void op_Completed(object sender,EntityQueriedEventArgs<Contract> e)
{

if(e.IsCompleted)
{
     contractsBindingSource.DataSource=e.Results;
}


}

However I tried also to use List<Contract> and the same it does not work.

The Item gets geleted but the XtraGrid does not refresh and the Items just remains.

Thanks.
]]> Tue, 16 Nov 2010 05:41:31 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=2306&PID=9132#9132 Deleting Objects : It sounds like your grid is not... http://www.ideablade.com/forum/forum_posts.asp?TID=2306&PID=9125#9125 Author: jsobell
Subject: 2306
Posted: 15-Nov-2010 at 3:11pm

It sounds like your grid is not being informed of changes to its underlying dataset.
How have you bound the collection to the grid? If it's via a property, is that property an ObservableCollection, in which case it will update automatically, or is it a derived property of some sort in which case you'll have to raise the OnPropertyChanged event for that property.
I don't think this has anything to do with caching, and you can set the DefaultQueryStrategy to be DatasourceOnly if you want to prove it.

]]> Mon, 15 Nov 2010 15:11:57 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=2306&PID=9125#9125 Deleting Objects : Hello I have been playing around... http://www.ideablade.com/forum/forum_posts.asp?TID=2306&PID=9113#9113 Author: amourrashid
Subject: 2306
Posted: 15-Nov-2010 at 6:25am

Hello I have been playing around with IdeaBlade and many aspects appear straight but one thing that I don't understand why it is idesigned this way is the caching process.

I have a Contract table that has contract items as a mater detail relationship.

I have a form that displays a list of contracts in XtraGrid bound to bindingsource. When I try to delete a contract it gets deleted in the database but the list on the grid stays as it is. it is not updated. If I try to call contractBindingSource.ResetItems(false) I get an exception that the list is readonly.

The contractBindingSource.RemoveCurrent either does not work it gives an error.
So how can my Grid be in Sync with the EntityManager or how can I disable this caching stuff. I feel very frustrated coz I've tried every option I know.


This is what I do.

Contract _contract=contractBindingSource.Current as Contract;
_contract.EntityAspect.Delete();
//contractBindingSource.RemoveCurrent() raises an error
//_manager.RemoveEntity(_contract,true) has no effect
//contractBindingSource.ResetItems(false) raises error
_manager.SaveChanges();
_manager.AcceptChanges();

Now how can I refresh my cache?
Please If any one can help.
Thanks in advance.



]]> Mon, 15 Nov 2010 06:25:13 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=2306&PID=9113#9113