Visual Studio throws "unhandled error" on Jesse Liberty validation example project WHY?

09-11-2009 8:01 AM |

I setup Jesse Liberty's mini-tutorial "Silverlight Validation in Detail" as a visual studio solution.  Absolutely verbatim.  Yet when I ran it an an unhandled error tripped up the debugger in the get/set for ISBN10 (at line 36 ... the debugger opted out).

** I'd very much appreciate a note from someone at MS and/or Visual Studio if this work around is required or if I've done something wrong... that makes this work around unnecessary ** 

 private string isbn10;

  25:     public string ISBN10

  26:     {

  27:       get

  28:       {

  29:         return isbn10;

  30:       }

  31:       set

  32:       {

  33:          

  34:         if ( value.Length != 10 )

  35:         {

  36:           throw new ArgumentException( "Must be exactly 10 integers long" );

  37:         }

  38:  

  39:         char[] isbnAsArray = value.ToCharArray();

  40:  

  41:         foreach ( char c in isbnAsArray )

I found a solution here:  

http://silverlightfeeds.com/post/958/Not_Breaking_on_ValidationException_take_2.aspx  
by Jeff Handley

Click on Debug->Exceptions (Ctrl+D, E for your keyboard folks) 
Click on Add… 
Select the Type as “Common Language Runtime Exceptions” 
Type the name as System.ComponentModel.DataAnnotations.ValidationException and click OK. 
You’ll now see this exception in the list.  Uncheck “User-unhandled just for this exception, and click OK. 

---------- 

VERY puzzled
tom
(and many thanks to Jeff for providing the solution"

Fix does not work? Do ineed any library, dll, etc?

10-15-2009 7:52 PM |

Hi guys,

I'm having similar issues with Jesse Liberty's tutorial code here:
http://silverlight.net/learn/videos/silverlight-videos/implementing-password-validation/

On running the program, and by not entering a valid email for the id field, Visual Studio breaks with the exception

"System.ArgumentException was unhandled by user code
Message="Email address not valid."
StackTrace:
at PasswordValidation.Membership.set_Id(String value)
InnerException:


I have done the fix by adding the "System.ComponentModel.DataAnnotation.ValidationException" to the “Common Language Runtime Exceptions” exceptions list and Uncheck “User-unhandled" just fot it, but it still happens.

Am i missing something very basic here? Do i need to add a reference to any exception library DLL or something?

Cheers,
Mark

Re: Fix does not work? Do ineed any library, dll, etc?

10-15-2009 8:33 PM |

What i noticed is that this issue is only when you hit debug inside visual studio as that is what halts program, When you open the html file with the XAP in it individually it works well. So the problem is still in the VS level and the fix does not seem to work for me for some reason

Re: Fix does not work? Do ineed any library, dll, etc?

11-27-2009 5:33 PM |

Hi Paul.

markpaul:

I have done the fix by adding the "System.ComponentModel.DataAnnotation.ValidationException" to the “Common Language Runtime Exceptions” exceptions list and Uncheck “User-unhandled" just fot it, but it still happens.