Comments on: How insert Separator in a databound ComboBox

By: Mike Kulls

Mike Kulls — Mon, 04 Jul 2011 03:21:00 +0000

“But IMHO I prefer not to have any UI-related stuff in my ViewModel classes”

doesn’t adding a blank item (that consitutes a separator anyway) fail to achieve this?

By: zzpluralza

zzpluralza — Wed, 04 May 2011 22:23:03 +0000

It was not obvious at first to me so I want to add for others that you need to specify the binding path that will have your “empty value” as such

Hope that helps

By: F£ö

F£ö — Wed, 30 Mar 2011 12:57:55 +0000

I almost forget …
There is no need for HorizontalAlignment=”Stretch” IsEnabled=”False” in the Separator (at least with Framework 4.0).

By: F£ö

F£ö — Wed, 30 Mar 2011 12:54:50 +0000

I used the ComboBox.ItemTemplate property to achieve the same goal.
This work fine as well, but your solution is better in my case : I can use the DisplayMemberPath property at the same time !!
Thanks a lot

By: Cannon

Cannon — Tue, 08 Jun 2010 12:53:06 +0000

The previous suggestion doesn’t work.
The solution http://blog.alner.net/archive/2010/04/25/cancelling-selection-change-in-a-bound-wpf-combo-box.aspx

By: Cannon

Cannon — Tue, 08 Jun 2010 11:00:45 +0000

I've also added a setter to DataTrigger, to make separators unselectable:

By: Christoph

Christoph — Sun, 28 Feb 2010 15:30:00 +0000

Great, works fine!

By: thomas

thomas — Fri, 02 Oct 2009 09:38:33 +0000

Erratum:
In post #3, should read
“…general-purpose ObservableCollection instead of ObservableCollection…”

By: Jeremy

Jeremy — Fri, 02 Oct 2009 09:35:47 +0000

Thomas, you’re right.

But IMHO I prefer not to have any UI-related stuff in my ViewModel classes

By: thomas

thomas — Fri, 02 Oct 2009 09:30:56 +0000

If you don’t mind using the more general-purpose ObservableCollection instead of ObservableCollection, then you could simply add a Separator object in the binding source:

DataContext = new ObservableCollection
{
“Catergory 1″,
new Separator(),
“Catergory 2″,
“Catergory 3″,
};