Comments on: WPF – Common Dependency Property Exception

By: a

Sun, 01 Jan 2012 09:59:44 +0000

Thanks a lot,
It helped me.

By: Chris27

Chris27 — Wed, 11 May 2011 11:08:36 +0000

Brilliant article! Thank you so much for this – I’ve just been trying to debug exactly the same scenario without any real clue as to what was happening. Turns out my custom object Type that I’m setting via the DependencyProperty doesn’t ‘unbox’ nicely from a UIPropertyMetadata object – I’ve just removed that parameter from DependencyProperty.Register() and everything works!

Cheers, Chris

By: Piotr

Piotr — Thu, 09 Sep 2010 13:02:47 +0000

Thx. It helps a lot.
I used incorrect third parameter with similar result.

By: Steve

Steve — Sat, 04 Sep 2010 01:57:48 +0000

Here’s a suggested topic: FrameworkPropertyMetadata and setting the default binding mode (as well as a host of other settings).

By: Steve

Steve — Sat, 04 Sep 2010 01:54:52 +0000

Now THAT’s a good blog article !
I always appreciate it when someone really knows what they’re talking about.

By: Reed

Reed — Fri, 23 Oct 2009 22:45:53 +0000

Hi Luis! Thanks for the comment – Note that this was my suggested solution at the end (although putting in new PropertyMetadata(0.0) works as well). I wanted to point out exactly WHY this occurs, so people are aware of it being a problem, since I recently had a not-so-fun experience of trying to debug this deep inside of a DependencyObject where it was not obvious. (I was doing this on a behavior, which makes the debugging info even less readable.)

By: Luis Guerrero

Luis Guerrero — Fri, 23 Oct 2009 21:04:48 +0000

You’re right, what do you need to do is:

public static DependencyProperty ValueProperty =
DependencyProperty.Register(
“Value”,
typeof(double),
typeof(Window1),
new PropertyMetadata(0d));

Cheers. Luis.

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Fri, 23 Oct 2009 20:59:43 +0000

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