http://tech.groups.yahoo.com/group/altdotnet/ Alt Dot.Net Discussions Fri, 10 Jul 2009 14:16:41 GMT Greg Young http://tech.groups.yahoo.com/group/altdotnet/message/22402 http://tech.groups.yahoo.com/group/altdotnet/message/22402 See the notification pattern. Cheers, Greg ... -- Les erreurs de grammaire et de syntaxe ont été incluses pour m'assurer de votre attention Fri, 10 Jul 2009 14:09:43 GMT Michael D. Brown http://tech.groups.yahoo.com/group/altdotnet/message/22401 http://tech.groups.yahoo.com/group/altdotnet/message/22401 Exceptions mean that the code has gotten into a state it should not be in so I'm going to spew out everything I know so someone can address the issue. For Fri, 10 Jul 2009 12:32:07 GMT Richard Dingwall http://tech.groups.yahoo.com/group/altdotnet/message/22400 http://tech.groups.yahoo.com/group/altdotnet/message/22400 ... All good - probably just my workmates monitor I was using today :) Cheers, Rich Fri, 10 Jul 2009 06:11:52 GMT Charlie Poole http://tech.groups.yahoo.com/group/altdotnet/message/22399 http://tech.groups.yahoo.com/group/altdotnet/message/22399 Ah well... conscensus on our list was that the new icons were an improvement. Sorry you don't like them. If others prefer the old ones, we may bring them back Fri, 10 Jul 2009 01:49:21 GMT Richard Dingwall http://tech.groups.yahoo.com/group/altdotnet/message/22398 http://tech.groups.yahoo.com/group/altdotnet/message/22398 What've you done to the tree icons?? They used to be bright cheerful green and red -- now they look like they've all withered and died! -- Richard Dingwall Thu, 09 Jul 2009 21:09:38 GMT Adam Dymitruk http://tech.groups.yahoo.com/group/altdotnet/message/22397 http://tech.groups.yahoo.com/group/altdotnet/message/22397 This condition is not exceptional. It is available for the user to do. If they don't have enough to get the product and they try AND you allow the user to take Thu, 09 Jul 2009 20:51:40 GMT Chris Morris http://tech.groups.yahoo.com/group/altdotnet/message/22396 http://tech.groups.yahoo.com/group/altdotnet/message/22396 I don't have an internet link, but in my experience using custom exceptions for flow control in a validation situation is frowned on by some. It could be a Thu, 09 Jul 2009 19:26:31 GMT Jarrett Vance http://tech.groups.yahoo.com/group/altdotnet/message/22395 http://tech.groups.yahoo.com/group/altdotnet/message/22395 This situation is precisely when you should use an exception. If there is a business reason for AddProductTask to fail, such as "not enough bonus", then that Thu, 09 Jul 2009 17:54:03 GMT siroco_x http://tech.groups.yahoo.com/group/altdotnet/message/22394 http://tech.groups.yahoo.com/group/altdotnet/message/22394 Well, from what I've read up to this point, using Exceptions as a messaging mechanism is frowned upon - as exceptions should really for .. exceptional stuff , Thu, 09 Jul 2009 13:57:26 GMT Jarrett Vance http://tech.groups.yahoo.com/group/altdotnet/message/22393 http://tech.groups.yahoo.com/group/altdotnet/message/22393 I suggest your "You do not have enough bonus to buy this product" should be an exception that is thrown from the AddProductTask method. For example, in the Thu, 09 Jul 2009 12:41:58 GMT Ryan Roberts http://tech.groups.yahoo.com/group/altdotnet/message/22392 http://tech.groups.yahoo.com/group/altdotnet/message/22392 I use Udi's domain event pattern ( http://www.udidahan.com/2008/08/25/domain-events-take-2/) for this, which is functional but breaks encapsulation in my Thu, 09 Jul 2009 11:59:48 GMT siroco_x http://tech.groups.yahoo.com/group/altdotnet/message/22391 http://tech.groups.yahoo.com/group/altdotnet/message/22391 Well, yeah, I could return an object with an empty or not error message. But the problem is with the AddProductTask that get's called by the Controller. Should Thu, 09 Jul 2009 11:16:44 GMT Domenico Musto http://tech.groups.yahoo.com/group/altdotnet/message/22390 http://tech.groups.yahoo.com/group/altdotnet/message/22390 Can you return always the same objects to the view? When there is an error you will pass an error message and an empty "json object"...otherwise you will pass Thu, 09 Jul 2009 10:57:01 GMT Ryan Roberts http://tech.groups.yahoo.com/group/altdotnet/message/22389 http://tech.groups.yahoo.com/group/altdotnet/message/22389 Can't you always use the same viewmodel type with an enumeration of message objects for what has happened / failed with the cart operation along with the model Thu, 09 Jul 2009 08:20:41 GMT siroco_x http://tech.groups.yahoo.com/group/altdotnet/message/22388 http://tech.groups.yahoo.com/group/altdotnet/message/22388 Let's say I have an AddProductToCartTask with a method Execute(). Now, the task is being called from a Controller. In the Execute method , there is a check