Debugging Design-Time Exceptions

Mirrored Blogs — Fri, 20 Jun 2008 02:37:08 GMT

It’s not entirely uncommon for projects that run fine to not work when loaded into Blend for editing

Debugging Design-Time Exceptions

Sparkle bloggers — Fri, 20 Jun 2008 02:44:34 GMT

It’s not entirely uncommon for projects that run fine to not work when loaded into Blend for editing:

re: Debugging Design-Time Exceptions

Jonas Follesø — Fri, 20 Jun 2008 03:38:26 GMT

Great post!

Writing code designers can work with is something I'm really interested in...

What's the best way to detect if an object is being consumed inside Blend? Currently I do a if(HtmlPage.IsEnabled) { Populate Some Dummy Design Time Data } - That way the designer who is consuming a bindable object gets a better experience.

Do you have any other tips/tricks onw how to make the Blend 2.5 experience more pleasent when working with "real code"?

re: Debugging Design-Time Exceptions

Mike — Thu, 10 Jul 2008 17:26:18 GMT

I don't see the difference between your good and bad example. All you did is move the code into another method. What am I missing?

re: Debugging Design-Time Exceptions

Pete Blois — Wed, 06 Aug 2008 04:52:43 GMT

The difference between the good code and the bad code in this case is that the method containing the code cannot be called, if it does then the CLR will attempt to Just-In-Time compile (JIT) the code and run into the missing method exception.

The resolution is to move the code out of the constructor and into another method with a guard around it to prevent it from getting compiled.

Debugging Expression Blend Design Time Errors

ASPInsiders — Sun, 14 Dec 2008 23:02:42 GMT

It may not be the most obvious thing to do but if your getting design time errors in Blend – attach Visual

re: Debugging Design-Time Exceptions

Steve Kwan — Tue, 23 Jun 2009 03:04:43 GMT

This article was really helpful. I was getting a "Cannot create an instance of X" error in Microsoft Expressions Blend, despite the Solution loading properly in Visual Studio. I'm still debugging, but it looks like the problem was caused by the HtmlPage issue you mentioned above.

re: Debugging Design-Time Exceptions

Eric Ambrosi — Wed, 15 Jul 2009 23:00:40 GMT

Great article Pete :) it has been helpfull