DevForce Community Forum : [Resolved]ListConverter Issue http://www.ideablade.com/forum/ This is an XML content feed of; DevForce Community Forum : DevForce Classic : [Resolved]ListConverter Issue Thu, 11 Jun 2026 16:35:33 -700 Thu, 11 Oct 2007 09:16:39 -700 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 9.69 360 www.ideablade.com/forum/RSS_post_feed.asp?TID=487 DevForce Community Forum http://www.ideablade.com/forum/forum_images/IdeaBlade_logo_tm.png http://www.ideablade.com/forum/ [Resolved]ListConverter Issue : I ended up overriding the UpdateNullEntity... http://www.ideablade.com/forum/forum_posts.asp?TID=487&PID=1571#1571 Author: orcities
Subject: 487
Posted: 11-Oct-2007 at 9:16am

I ended up overriding the UpdateNullEntity for the Entity and setting the value that was the set as the DisplayMember and it works fine.
 
 
]]> Thu, 11 Oct 2007 09:16:39 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=487&PID=1571#1571 [Resolved]ListConverter Issue : Yup. It is a straight entity list.... http://www.ideablade.com/forum/forum_posts.asp?TID=487&PID=1565#1565 Author: orcities
Subject: 487
Posted: 11-Oct-2007 at 7:08am

Yup. It is a straight entity list. If I remember correctly there is a way to make a null entity equal to a base object or base values. But I can't remember how. And I am not sure why it is event putting it there.

]]> Thu, 11 Oct 2007 07:08:53 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=487&PID=1565#1565 [Resolved]ListConverter Issue : Is it just a straight entity list... http://www.ideablade.com/forum/forum_posts.asp?TID=487&PID=1558#1558 Author: Linguinut
Subject: 487
Posted: 10-Oct-2007 at 6:18pm

Is it just a straight entity list filling the combobox?

I'll check and see how my lists are getting filled...maybe they have a null entity at the top, too.
]]> Wed, 10 Oct 2007 18:18:03 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=487&PID=1558#1558 [Resolved]ListConverter Issue : That didn't work. If I am... http://www.ideablade.com/forum/forum_posts.asp?TID=487&PID=1556#1556 Author: orcities
Subject: 487
Posted: 10-Oct-2007 at 3:07pm

That didn't work. If I am adding an new item that first element in the list is blank. And when I try and change it is when it crashes the app due to Object Ref. not set to an instan... you get the point. The first entity in the list is null when it shouldn't even be there.
]]> Wed, 10 Oct 2007 15:07:11 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=487&PID=1556#1556 [Resolved]ListConverter Issue : the form.autovalidate may be the... http://www.ideablade.com/forum/forum_posts.asp?TID=487&PID=1555#1555 Author: Linguinut
Subject: 487
Posted: 10-Oct-2007 at 2:05pm

the form.autovalidate may be the problem...it was for me.  try adding the following to your view code:

//right after the SetPresenter call
AutoValidate = pPresenter.SetAutoValidation();
 
In the presenter place the following:
 
/// <summary>Set how the View constrains focus change when validation fails.</summary>
/// <remarks>Can also disable auto validation altogether.</remarks>
public AutoValidate SetAutoValidation()
{
    // Play with the choices.
    //return AutoValidate.EnablePreventFocusChange; // Locked in control
    return AutoValidate.EnableAllowFocusChange; // Can move
    //return AutoValidate.Inherit; // Do what the parent container does
    //return AutoValidate.Disable; // Don't autovalidate.
}
 
I tried all of them and this one worked best for me.  For now... I may run into other validation issues later, but I will deal with them as they come up.


Edited by Linguinut - 10-Oct-2007 at 2:06pm]]> Wed, 10 Oct 2007 14:05:56 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=487&PID=1555#1555 [Resolved]ListConverter Issue : By changing it and binding to... http://www.ideablade.com/forum/forum_posts.asp?TID=487&PID=1554#1554 Author: orcities
Subject: 487
Posted: 10-Oct-2007 at 2:01pm

By changing it and binding to the ID and adding that ListConverter it worked. I would of thought that it would work with the entity itself.
 
Tx.
 
One more issue. I am getting and extra blank option in my combobox that is null and if selected causes some issues.
]]> Wed, 10 Oct 2007 14:01:30 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=487&PID=1554#1554 [Resolved]ListConverter Issue : Read through http://www.ideabl... http://www.ideablade.com/forum/forum_posts.asp?TID=487&PID=1552#1552 Author: Linguinut
Subject: 487
Posted: 10-Oct-2007 at 1:19pm

Read through http://www.ideablade.com/forum/forum_posts.asp?TID=460 . . . that may shed a little more light on the subject.  Follow the example in Cabana that has a MakeEntityList and MakeEntityIDList.  Call both from the presenter:
 
SetBindingListConverter(descriptors.AddressType, ListConverterNames.AddressType);
SetBindingListConverter(descriptors.AddressIndex, ListConverterNames.AddressTypeID);
 
Make sure you are binding the combobox to the AddressIndex field, not the related entity list.
 
Also, I added the AutoValidate.EnableAllowFocusChanged (see Cabana) which alleviated some of the navigation issues in the view with empty lists and such.  I may need to adjust that a little later on.
]]> Wed, 10 Oct 2007 13:19:28 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=487&PID=1552#1552 [Resolved]ListConverter Issue : I believe that is what I am doing.... http://www.ideablade.com/forum/forum_posts.asp?TID=487&PID=1551#1551 Author: orcities
Subject: 487
Posted: 10-Oct-2007 at 1:13pm

I believe that is what I am doing.
 
My example: Address table has foreign key to Types (called AddressType)table
 
I have used hte ControlBindingManager to add AddressType, not the key property. It gives me the combobox.
 
Then in the presenter I use the following to bind the data:
 
EntityPropertyDescriptors.ContactAddressPropertyDescriptor descriptors = EntityPropertyDescriptors.ContactAddress;
SetBindingListConverter(descriptors.AddressType, ListConverterNames.AddressType);
 
It binds the list converter but it doesn't give me my current value. It also has an empty space at the top of the combobox that seems to be a null entity that if selected crashes the application.
]]> Wed, 10 Oct 2007 13:13:37 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=487&PID=1551#1551 [Resolved]ListConverter Issue : Looks like you&#039;re calling... http://www.ideablade.com/forum/forum_posts.asp?TID=487&PID=1549#1549 Author: Bill Jensen
Subject: 487
Posted: 10-Oct-2007 at 1:04pm

Looks like you're calling SetBindingListConverter() in the right place.

Have you tried binding your combo to the relation property rather than the foreign key field?  This retrieves the set of foreign objects, rather than foreign key values.  Then set the DisplayMember to the property (e.g., Name) of the foreign object to appear in the list.
 
Bill J.
]]> Wed, 10 Oct 2007 13:04:30 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=487&PID=1549#1549 [Resolved]ListConverter Issue : WhenI bind the list control on... http://www.ideablade.com/forum/forum_posts.asp?TID=487&PID=1536#1536 Author: Linguinut
Subject: 487
Posted: 10-Oct-2007 at 11:08am

When I bind the list control on the view I use the foreign key field (it will default to textbox, so I change it to combobox).  I place the binding commands (SetBindingListConverter) in the presenter following the base.OnViewSet command.]]> Wed, 10 Oct 2007 11:08:02 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=487&PID=1536#1536 [Resolved]ListConverter Issue : I have tried on multiple occassions... http://www.ideablade.com/forum/forum_posts.asp?TID=487&PID=1535#1535 Author: orcities
Subject: 487
Posted: 10-Oct-2007 at 10:01am

I have tried on multiple occassions to use the ListConverter service. I have been successful in getting the items I desire. My problem is that my existing item is never selected.
 
I am not sure if the list is being set after the value is assigned to the combobox.
 
I am setting the list converts in the OnViewContextSet, to verify that my binding manager is not null.


Edited by orcities - 11-Oct-2007 at 9:17am]]> Wed, 10 Oct 2007 10:01:46 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=487&PID=1535#1535