http://goblincave.net WPF, C# i den lidt større sammenhæng Sun, 15 Aug 2010 19:18:58 +0000 en hourly 1 http://wordpress.org/?v=3.0.1 http://goblincave.net/08/2010/trying-to-build-high-concurrency-systems-its-just-not-easy.php http://goblincave.net/08/2010/trying-to-build-high-concurrency-systems-its-just-not-easy.php#comments Sun, 15 Aug 2010 19:18:58 +0000 GoblinHero http://goblincave.net/?p=572 http://goblincave.net/08/2010/trying-to-build-high-concurrency-systems-its-just-not-easy.php/feed 0 http://goblincave.net/07/2010/hello-eric-and-qtpy-ui-for-python.php http://goblincave.net/07/2010/hello-eric-and-qtpy-ui-for-python.php#comments Tue, 20 Jul 2010 23:30:53 +0000 GoblinHero http://goblincave.net/?p=562 http://goblincave.net/07/2010/hello-eric-and-qtpy-ui-for-python.php/feed 0 http://goblincave.net/07/2010/adventures-into-python.php http://goblincave.net/07/2010/adventures-into-python.php#comments Mon, 19 Jul 2010 19:33:35 +0000 GoblinHero http://goblincave.net/?p=560 http://goblincave.net/07/2010/adventures-into-python.php/feed 0 http://goblincave.net/07/2010/hello-world-monodevelop.php http://goblincave.net/07/2010/hello-world-monodevelop.php#comments Sun, 18 Jul 2010 21:44:33 +0000 GoblinHero http://goblincave.net/?p=555 http://goblincave.net/07/2010/hello-world-monodevelop.php/feed 0 http://goblincave.net/07/2010/approximately-testdriven.php http://goblincave.net/07/2010/approximately-testdriven.php#comments Sat, 17 Jul 2010 09:49:58 +0000 GoblinHero http://goblincave.net/?p=544 http://goblincave.net/07/2010/approximately-testdriven.php/feed 0 http://goblincave.net/07/2010/prototyping-vs-doing-real-developement.php http://goblincave.net/07/2010/prototyping-vs-doing-real-developement.php#comments Tue, 13 Jul 2010 22:32:24 +0000 GoblinHero http://goblincave.net/?p=538 http://goblincave.net/07/2010/prototyping-vs-doing-real-developement.php/feed 0 http://goblincave.net/07/2010/the-gobbo-got-a-new-job.php http://goblincave.net/07/2010/the-gobbo-got-a-new-job.php#comments Fri, 09 Jul 2010 18:56:24 +0000 GoblinHero http://goblincave.net/?p=536 http://goblincave.net/07/2010/the-gobbo-got-a-new-job.php/feed 0 http://goblincave.net/07/2010/how-people-always-try-to-do-things-the-hard-way-with-wpf.php http://goblincave.net/07/2010/how-people-always-try-to-do-things-the-hard-way-with-wpf.php#comments Tue, 06 Jul 2010 20:00:44 +0000 GoblinHero http://goblincave.net/?p=533 http://goblincave.net/07/2010/how-people-always-try-to-do-things-the-hard-way-with-wpf.php/feed 0 http://goblincave.net/06/2010/m-v-vm-building-an-erp-system-%e2%80%93-part-10-of-n-orderline.php http://goblincave.net/06/2010/m-v-vm-building-an-erp-system-%e2%80%93-part-10-of-n-orderline.php#comments Sun, 06 Jun 2010 20:15:37 +0000 GoblinHero http://goblincave.net/?p=475 post 9 - and we want to do it in style. We want to present the user with a really nice interface for fast input. We could have done it the old-fashioned way with an 'Add' button for adding an orderline in a new window, but hey, we got a shiny 'new' DataGrid in 4.0 - so let's put that for a spin:]]> http://goblincave.net/06/2010/m-v-vm-building-an-erp-system-%e2%80%93-part-10-of-n-orderline.php/feed 1 http://goblincave.net/06/2010/m-v-vm-building-an-erp-system-%e2%80%93-part-9-of-n-orders-and-handling-null.php http://goblincave.net/06/2010/m-v-vm-building-an-erp-system-%e2%80%93-part-9-of-n-orders-and-handling-null.php#comments Sun, 06 Jun 2010 19:45:56 +0000 GoblinHero http://goblincave.net/?p=470 part 8 - the orders. We'll make a bit more complex filter for the list of orders while keeping it paged - the IOrdersViewModel is so akin to ICustomersViewModel that I'll jump to the differences in the IOrderFilter:]]> http://goblincave.net/06/2010/m-v-vm-building-an-erp-system-%e2%80%93-part-9-of-n-orders-and-handling-null.php/feed 1 http://goblincave.net/06/2010/m-v-vm-building-an-erp-system-%e2%80%93-part-8-of-n-rounding-up-customers.php http://goblincave.net/06/2010/m-v-vm-building-an-erp-system-%e2%80%93-part-8-of-n-rounding-up-customers.php#comments Fri, 04 Jun 2010 21:09:48 +0000 GoblinHero http://goblincave.net/?p=457 part 7 where the user can add, edit and remove customers. Not bad considering the small amount of code in the solution. Still we have a lot of classes involved and this alone creates a lot of complexity. We are paying the price for a very stable and easy-to-maintain solution down the road. I hope this will be easy to see when we start implementing entity number two - the order.]]> http://goblincave.net/06/2010/m-v-vm-building-an-erp-system-%e2%80%93-part-8-of-n-rounding-up-customers.php/feed 1 http://goblincave.net/06/2010/m-v-vm-building-an-erp-system-%e2%80%93-part-7-of-n-views-2.php http://goblincave.net/06/2010/m-v-vm-building-an-erp-system-%e2%80%93-part-7-of-n-views-2.php#comments Fri, 04 Jun 2010 20:45:31 +0000 GoblinHero http://goblincave.net/?p=464 part 6 was ViewModels - now it is time for the eye-candy and unleashing the power of the ViewModels. All views (save one) will implement the IView<TViewModel> interface which has a single method: void SetViewModel(TViewModel viewmodel). I'll explain later why there are no more methods...]]> http://goblincave.net/06/2010/m-v-vm-building-an-erp-system-%e2%80%93-part-7-of-n-views-2.php/feed 1 http://goblincave.net/06/2010/m-v-vm-building-an-erp-system-%e2%80%93-part-6-of-n-customer-interaction.php http://goblincave.net/06/2010/m-v-vm-building-an-erp-system-%e2%80%93-part-6-of-n-customer-interaction.php#comments Fri, 04 Jun 2010 20:41:06 +0000 GoblinHero http://goblincave.net/?p=439 post 5 we have managed to get and find data - now we need to be able to perform interactions with the data. We need an implementation of interface ICustomerDetailViewModel:]]> http://goblincave.net/06/2010/m-v-vm-building-an-erp-system-%e2%80%93-part-6-of-n-customer-interaction.php/feed 2 http://goblincave.net/06/2010/m-v-vm-building-an-erp-system-%e2%80%93-part-5-of-n-%e2%80%93-customersviewmodel.php http://goblincave.net/06/2010/m-v-vm-building-an-erp-system-%e2%80%93-part-5-of-n-%e2%80%93-customersviewmodel.php#comments Thu, 03 Jun 2010 22:00:13 +0000 GoblinHero http://goblincave.net/?p=426 part 4 and so far we have mostly been trying to get to the point where we can actually see something on the screen - and now we will look at the data behind the view. Enter the ViewModel. The responsebility of the ViewModel (in my version, at least) is to act as a mediator between the (dumb) View and the Model.]]> http://goblincave.net/06/2010/m-v-vm-building-an-erp-system-%e2%80%93-part-5-of-n-%e2%80%93-customersviewmodel.php/feed 1 http://goblincave.net/05/2010/m-v-vm-building-an-erp-system-%e2%80%93-part-4-of-n-%e2%80%93-commanding.php http://goblincave.net/05/2010/m-v-vm-building-an-erp-system-%e2%80%93-part-4-of-n-%e2%80%93-commanding.php#comments Mon, 31 May 2010 19:20:29 +0000 GoblinHero http://goblincave.net/?p=405 part 3, we are getting ready to tie things together and as many might know, WPF contains the really nice ICommand interface that implements well with buttons, menus and inputbindings (go .Net 4.0). Back when I started out with WPF I used a lot of standalone implementations of the ICommand interface. It made for very nicely encapsulated commands, but there were problems. I put them into ResourceDictionaries for sharing them between views, but soon I had an overwhelming number of them, and naming became a problem. Also, maintainability proved troublesome. Having scattered business-logic scattered out into all these little classes that I couldn't use DI (Dependency Injection) on proved a maintenance nightmare and ResourceDictionaries proved brittle (magic strings, anyone?). Testability wasn't all that great either, and most of the commands were mostly doing boxing and un-boxing and IoC (Inversion of Control) resolution.]]> http://goblincave.net/05/2010/m-v-vm-building-an-erp-system-%e2%80%93-part-4-of-n-%e2%80%93-commanding.php/feed 2 http://goblincave.net/05/2010/m-v-vm-building-an-erp-system-%e2%80%93-part-3-of-n-%e2%80%93-the-first-viewmodels.php http://goblincave.net/05/2010/m-v-vm-building-an-erp-system-%e2%80%93-part-3-of-n-%e2%80%93-the-first-viewmodels.php#comments Fri, 28 May 2010 22:26:56 +0000 GoblinHero http://goblincave.net/?p=385 part 2 - we now have a model to work from - and it is time to create the first ViewModel. After some carefull consideration - I've chosen that we need a list of Customers where we can perform CRUD (Create, Read, Update, Delete), to make things a bit interesting, we want to have a paged view as we expect our customers to range in the thousands]]> http://goblincave.net/05/2010/m-v-vm-building-an-erp-system-%e2%80%93-part-3-of-n-%e2%80%93-the-first-viewmodels.php/feed 2 http://goblincave.net/05/2010/m-v-vm-building-an-erp-system-part-2-of-n-the-model-implementation.php http://goblincave.net/05/2010/m-v-vm-building-an-erp-system-part-2-of-n-the-model-implementation.php#comments Wed, 26 May 2010 22:15:44 +0000 GoblinHero http://goblincave.net/?p=369 part 1, we need to implement the model somehow. The solution-source code shows the refactored result. There are 3 major implementation details that I will touch here:

• Validation
• Equality and Identity
• Collections

]]> http://goblincave.net/05/2010/m-v-vm-building-an-erp-system-part-2-of-n-the-model-implementation.php/feed 2 http://goblincave.net/05/2010/m-v-vm-building-an-erp-system-part-1-of-n-the-model-design.php http://goblincave.net/05/2010/m-v-vm-building-an-erp-system-part-1-of-n-the-model-design.php#comments Wed, 26 May 2010 22:15:12 +0000 GoblinHero http://goblincave.net/?p=358 http://goblincave.net/05/2010/m-v-vm-building-an-erp-system-part-1-of-n-the-model-design.php/feed 1 http://goblincave.net/05/2010/some-thoughts-on-wpf-and-the-model-view-viewmodel-pattern.php http://goblincave.net/05/2010/some-thoughts-on-wpf-and-the-model-view-viewmodel-pattern.php#comments Sat, 08 May 2010 19:33:20 +0000 GoblinHero http://goblincave.net/?p=356 http://goblincave.net/05/2010/some-thoughts-on-wpf-and-the-model-view-viewmodel-pattern.php/feed 0 http://goblincave.net/04/2010/visual-studio-2010-first-impressions.php http://goblincave.net/04/2010/visual-studio-2010-first-impressions.php#comments Sun, 18 Apr 2010 08:08:24 +0000 GoblinHero http://goblincave.net/?p=353 http://goblincave.net/04/2010/visual-studio-2010-first-impressions.php/feed 0