More advanced attached property use: the Ramora pattern

re: More advanced attached property use: the Ramora pattern

Alfred — Fri, 09 Nov 2007 14:32:03 GMT

Hi Bencon,

did you tryed to let your software work on MS Visual Studio 2008 Version 9.0.20706.1 Beta2.

It seems that your software isn't able to compile, I've following errors:

Error 1 Assembly 'AttachedBehaviorExample' was not found. The 'clr-namespace' URI refers to an assembly that is not referenced by the project. C:\Documents and Settings\aso\Desktop\AttachedBehaviorExample\Window1.xaml 4 17 AttachedBehaviorExample

Error 2 The attachable property 'Brush' was not found in type 'Hover'. C:\Documents and Settings\aso\Desktop\AttachedBehaviorExample\Window1.xaml 8 32 AttachedBehaviorExample

...

Did you experienced it? Have you any idea how to solve the trouble?

Thank you very much in advance for your attention,

Alfred

Attached Properties spreadsheet « Martin’s 10

Attached Properties spreadsheet « Martin’s 10 — Thu, 15 Nov 2007 19:24:58 GMT

PingBack from http://wangmo.wordpress.com/2007/11/15/attached-properties-spreadsheet/

re: More advanced attached property use: the Ramora pattern

duncan — Mon, 24 Mar 2008 21:31:02 GMT

This looks like a very interesting technique, but how do you prevent memory leaks from the event handlers when the control goes out of scope?

re: More advanced attached property use: the Ramora pattern

BenCon — Tue, 15 Jul 2008 04:21:30 GMT

duncan -

You can unsubscribe from the events when the control is unloaded if that is an issue. I normally leave these details out of these kinds of examples, because it complicates the example and makes it harder to learn the key concept at hand.

Remora Pattern by Ben Constable

Razan's blog — Wed, 25 Mar 2009 09:09:14 GMT

According to Ben Constable, Remora Pattern allows you to attach a chunk of logic to any existing element

re: More advanced attached property use: the Ramora pattern

Kaj — Wed, 14 Oct 2009 09:17:35 GMT

Great work!

However I need to set this kind of properties from the code-behind instead of in the XAML Any ideas?

I would like to do this from the code:

You can do this by using the SetBrush static method on the Hover class, and passing the instance of the Button as the first argument.

re: More advanced attached property use: the Ramora pattern

lol-presentation — Mon, 16 Nov 2009 08:24:43 GMT

Hi.

"You can unsubscribe from the events when the control is unloaded if that is an issue."

If you do that with a control that is reparented (like controls in a tab item), your behaviour will stop working after the first reparenting.

How do you work around that?

re: More advanced attached property use: the Ramora pattern

BenCon — Tue, 17 Nov 2009 01:39:37 GMT

When the control is reparented, you should get an unloaded event and a loaded event. You can unwire in unloaded and rewire in loaded.