tag:blogger.com,1999:blog-6236963148693847138Sun, 14 Aug 2011 15:30:57 +0000UntypedMVVMPrismtutorialUXExpression Blendrhino mocksMemory LeaksModularEventBusRIAXAMLvisual studio team systemMEFDevelopment.Net 3.5CompositionUser ExperienceValidationData Bindingvideounit testingtest driven developmentPresentationUser GroupDeep LinkingWPFSilverlightA discussion about Rich Internet Applications, and user experience focusing on architecture, design patterns and methodologies.http://u-ix.blogspot.com/noreply@blogger.com (Carlos)Blogger12125tag:blogger.com,1999:blog-6236963148693847138.post-2625080930662015568Wed, 17 Nov 2010 02:50:00 +00002010-11-16T19:00:29.936-08:00MVVMXAMLValidationUntypedSilverlightData BindingLast post, I described a method to create a loosely typed business object that supports binding with change notification.  This post I’m going to add validation support.  I have chosen to use the INotifyDataErrorInfo interface to implement validation notification since it provides the richest functionality for this purpose.  IDataErrorInfo uses an indexer to report errors, which conflicts with http://feedproxy.google.com/~r/User_In-experience/~3/uXoWZHQm7K0/dynamic-entity-bindingvalidation.htmlnoreply@blogger.com (Carlos)0http://u-ix.blogspot.com/2010/11/dynamic-entity-bindingvalidation.htmltag:blogger.com,1999:blog-6236963148693847138.post-4824048640725778117Tue, 09 Nov 2010 20:17:00 +00002010-11-09T12:37:43.191-08:00Silverlight provides a powerful binding mechanism to allow a comprehensive solution for data transport and validation.  Unfortunately, this binding relies on a hard coded model for implementation.  In the scenario where the schema of the data entity is not known at compile time, there is nothing provided out of the box. I have come up with a fairly generic solution that stores data in a http://feedproxy.google.com/~r/User_In-experience/~3/gmfS-eKxmxc/dynamic-entity-binding.htmlnoreply@blogger.com (Carlos)0http://u-ix.blogspot.com/2010/11/dynamic-entity-binding.htmltag:blogger.com,1999:blog-6236963148693847138.post-8785540382004050590Fri, 04 Jun 2010 18:47:00 +00002010-06-04T11:47:11.926-07:00MEFModularEventBusMemory LeaksSilverlightCompositionI’ve been trying to implement my own “Event Bus” (Pub/Sub pattern) using MEF since it seems natural to export an event, or a delegate.  The problem is that a reference on one object to a delegate on another object could cause memory leaks.  (See Weak Events in C# by Daniel Grunwald   http://bit.ly/chKG7W). Following Daniel Grunwald’s article, I considered all the possibilities there and finally http://feedproxy.google.com/~r/User_In-experience/~3/nJntIaJjAMU/leak-proof-event-bus-using-mef.htmlnoreply@blogger.com (Carlos)0http://u-ix.blogspot.com/2010/06/leak-proof-event-bus-using-mef.htmltag:blogger.com,1999:blog-6236963148693847138.post-498469019128809863Tue, 20 Apr 2010 01:16:00 +00002010-04-19T18:43:46.854-07:00MVVMMEFXAMLSilverlightExpression BlendI have been mulling over different approaches for implementing the ViewModel (MVVM) pattern and feel that I’m close to a solution that I’m happy with.  I have the following criteria: View First.  I don’t like the idea of the ViewModel having even the slightest dependency on the view.  That way I can easily isolate it and test it.  The view I have no intention of (unit) testing as it will not http://feedproxy.google.com/~r/User_In-experience/~3/44TUhvyL-g0/viewmodel-and-design-time-data.htmlnoreply@blogger.com (Carlos)0http://u-ix.blogspot.com/2010/04/viewmodel-and-design-time-data.htmltag:blogger.com,1999:blog-6236963148693847138.post-8653391391953945543Sat, 17 Apr 2010 19:23:00 +00002010-04-17T12:36:47.586-07:00MVVMDevelopmentXAMLModularSilverlightShort and simple post about how to declare and bind to a custom dictionary in Silverlight 4.  I had trouble finding a solid example of this since it has been properly introduced in the full release of Silverlight this past week. Essentially I derived from Dictionary<String,String> and called it CustomDictionary within the application project.  Add a namespace declaration called local for the http://feedproxy.google.com/~r/User_In-experience/~3/vXa5ghadR3Q/dictionarys-in-xaml.htmlnoreply@blogger.com (Carlos)0http://u-ix.blogspot.com/2010/04/dictionarys-in-xaml.htmltag:blogger.com,1999:blog-6236963148693847138.post-6746152685419613826Tue, 10 Nov 2009 03:16:00 +00002009-11-09T19:16:34.354-08:00test driven developmentDevelopmentunit testingrhino mocksSilverlight.Net 3.5I try to follow the test driven design approach but I find it very difficult to do when ramping up on new technology.  Having wrapped up the initial release of Reflect (my MVVM core library),  I decided to try my hand at writing unit tests for Silverlight. The first step was to get the Unit Testing Framework up and running.  The first step was installing the templates (see http://http://feedproxy.google.com/~r/User_In-experience/~3/4xwS7DxnXuo/unit-testing-in-silverlight-with-rhino.htmlnoreply@blogger.com (Carlos)0http://u-ix.blogspot.com/2009/11/unit-testing-in-silverlight-with-rhino.htmltag:blogger.com,1999:blog-6236963148693847138.post-598125830735956236Fri, 06 Nov 2009 16:39:00 +00002010-04-27T19:49:38.442-07:00MVVMDevelopmentunit testingPrismSilverlight.Net 3.5I have released the source code with unit tests (half done) and a demo application on CodePlex. You can find it here: http://refract.codeplex.com/http://feedproxy.google.com/~r/User_In-experience/~3/SMW_RMnVlnw/i-have-released-source-code-with-unit.htmlnoreply@blogger.com (Carlos)0http://u-ix.blogspot.com/2009/11/i-have-released-source-code-with-unit.htmltag:blogger.com,1999:blog-6236963148693847138.post-551816561371331338Thu, 05 Nov 2009 14:24:00 +00002009-11-05T06:42:07.225-08:00MVVMDevelopmentPrismModularSilverlightDeep LinkingI’ve been on hiatus for a while working on a windows forms application using Composite Application Block (CAB) and the Model-View-Presenter pattern. This has inspired me in my Silverlight efforts as the modularity of the CAB architecture is enticing. My first attempt involved trying to use Silverlight 3’s navigation application to navigate to pages defined in modules loaded at runtime but the http://feedproxy.google.com/~r/User_In-experience/~3/2VrQCOJpVi0/composite-silverlight.htmlnoreply@blogger.com (Carlos)0http://u-ix.blogspot.com/2009/11/composite-silverlight.htmltag:blogger.com,1999:blog-6236963148693847138.post-5325536778380972049Wed, 24 Jun 2009 15:17:00 +00002009-07-03T07:33:31.906-07:00videotest driven developmentDevelopmentunit testingrhino mockstutorialvisual studio team systemI have just published a two part video of a presentation I gave to my colleagues, describing Test Driven Development using Visual Studio Team System and Rhino Mocks.http://silverlight.services.live.com/71140/Test%20Driven%20Development%20Part1/video.wmvhttp://silverlight.services.live.com/71140/Test%20Driven%20Development%20Part2/video.wmvI hope this will inspire more people to adopt this http://feedproxy.google.com/~r/User_In-experience/~3/EIQpoPblqCQ/test-driven-development-introduction.htmlnoreply@blogger.com (Carlos)0http://u-ix.blogspot.com/2009/06/test-driven-development-introduction.htmltag:blogger.com,1999:blog-6236963148693847138.post-3532510137961478301Fri, 24 Oct 2008 01:51:00 +00002008-10-23T18:51:35.223-07:00MVVMDevelopmentUser GroupPresentationSilverlightSo I just presented at the Toronto Silverlight User Group (http://www.torontosilverlight.com/) and Toronto .NET User Group (http://www.torontoug.net/) and thought it would be a good idea to share the material with everyone.  I'd like to thank the user group hosts and all that attended for allowing me to rush through what is clearly much more content than a person can absorb in an hour or so.  Ihttp://feedproxy.google.com/~r/User_In-experience/~3/2RJF1P0AAyg/user-group-presentation.htmlnoreply@blogger.com (Carlos)0http://u-ix.blogspot.com/2008/10/user-group-presentation.htmltag:blogger.com,1999:blog-6236963148693847138.post-7529861828917732515Thu, 07 Aug 2008 03:13:00 +00002008-08-06T20:24:44.408-07:00User ExperienceMVVMDevelopmentRIAXAMLSilverlightUX <- User Experience for Line of Business     A Silverlight application by its nature is a distributed app with a front-end on the client and a web service to provide connectivity to the data store. Application Diagram In order to decouple dependencies between components, I use dependency injection.  All components consumed by other components define a http://feedproxy.google.com/~r/User_In-experience/~3/h6ftM_DzaVI/architecture-design.htmlnoreply@blogger.com (Carlos)0http://u-ix.blogspot.com/2008/08/architecture-design.htmltag:blogger.com,1999:blog-6236963148693847138.post-5323126192482914718Thu, 24 Jul 2008 03:16:00 +00002009-06-25T05:36:33.540-07:00User ExperienceMVVMWPFDevelopmentRIAXAMLSilverlightUXBackgroundI have long considered HTML to be a hindrance to user experience in business applications. This old "language" was designed for simple hypertext informational pages but patched and bandaged to support the ever-growing expectations of corporate clients. I was very excited to hear of Microsoft's new Presentation Foundation and have been working toward promoting it as a replacement to http://feedproxy.google.com/~r/User_In-experience/~3/BbkFHqQiG5o/user-experience-for-line-of-business.htmlnoreply@blogger.com (Carlos)0http://u-ix.blogspot.com/2008/07/user-experience-for-line-of-business.html