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    • WPF MVVM with Devexpress

      Hi experts Anybody developing applications with devex mvvm framework and csla? Are there any helper/base classes available for devexpress mvvm framework. Thanks
      Posted to CSLA .NET discussion by Abbas on Tue, Apr 14 2015
    • Re: Status and Recommendations on CLSA, MVVM and Universal Apps

      There are two primary reasons for creating a viewmodel in the first place: Reshape the model to match the view because the model wasn't designed for the user scenario Add verbs (methods) unique to the UI that don't make sense in a business context If you are using CSLA correctly, your objects...
      Posted to CSLA .NET discussion by RockfordLhotka on Wed, May 21 2014
    • Status and Recommendations on CLSA, MVVM and Universal Apps

      Getting back into it all from some time away and trying to match all the proper bits together to get started. Universal App templates seem like a good idea and I know CSLA is something I want. MVVM makes a ton of sense. Not really sure if there is a recommended MVVM toolkit or framework, though. I see...
      Posted to CSLA .NET discussion by nhwilly on Sun, May 11 2014
    • Hiding properties in datagrid

      Hello, I have a simple WPF application using CSLA 4.5.30, with a DataGrid bound to a CollectionViewSource, which in turn is bound to a ViewModel that inherits from a CSLA ViewModel<T> object. In my case, it's a UserList (CSLA style) containing UserInfo objects. The data grid by default has...
      Posted to CSLA .NET discussion by TygreWolf on Tue, Jun 25 2013
    • Binding multiple views to a single BO

      I'm doing some multiple bindings to a single BO in WPF and would appreciate some feedback in case I'm going down a bad path. I have created a "ViewModelConductor(of M)" which will import child "ViewModel(of M)". The conductor will be responsible for the fetch/save/cancel/etc...
      Posted to CSLA .NET discussion by c_manboy on Tue, Apr 9 2013
    • Re: Silverlight - Using async / await with Csla.Xaml.ViewModelBase<T>

      To use async/await properly you need to use it all the way down the call stack. That means the UI code that initializes the viewmodel needs to await that operation. You can't mark a constructor as async, nor can you await a constructor. So the old pattern of initializing the viewmodel via the constructor...
      Posted to CSLA .NET discussion by RockfordLhotka on Tue, Nov 20 2012
    • Which MVVM Framework to take.

      Hi, there I have a question: Which MVVM Framework should I use? Is caliburn micro good stuff? What do you think about cocktail? Do you recommend to use cocktail and caliburn micro together? I found Tiagos " Caliburn.Micro for Csla". Do you recommend it? ciu Manfred
      Posted to CSLA .NET discussion by Org on Tue, Nov 20 2012
    • TypeIntializerException in RELEASE only

      I've got a Silverlight MVVM app. (CSLA.net 4.1) When compiling debug everything works fine. When I compile in release mode (like our build server) I have severe problems. All of my list item screens have entries but the databound values are all blank. When I attach a debugger I get TypeIntializer...
      Posted to CSLA .NET discussion by JonM on Fri, Feb 24 2012
    • MVVM start/evaluation

      Hi folks, nearly a year ago I underwent the step to walk the SL-path. Meanwhile I'm happy to have done so, since I think SL has much potential to outclass winforms in terms of great UI's. (THAT and not architectural reasons in first line are imho most important for a UI-technology, since UI should...
      Posted to CSLA .NET discussion by vschaak on Thu, Feb 16 2012
    • Re: Pass business object from parent viewmodel to child viewmodel in MVVM using CSLA

      The answer will be different depending on the MVVM UI framework you are using.
      Posted to CSLA .NET discussion by RockfordLhotka on Tue, Nov 22 2011
    • Re: ViewModelBase: why no Completed event?

      You can certainly add your own even when you create your viewmodel base class that inherits from ViewModelBase. The reason there isn't an event like that is because the most common usage scenario is the sort of thing you are talking about, and if one is not extremely careful you'll end up with...
      Posted to CSLA .NET discussion by RockfordLhotka on Mon, Nov 7 2011
    • Re: ProjectEdit / CollectionViewSource question

      It is hooked up via Bxf. See the section in the ebook that discusses how Bxf works, and specifically how it creates and initializes the view.
      Posted to CSLA .NET discussion by RockfordLhotka on Mon, Nov 7 2011
    • MVVM and the proper place to customize data to fit a particular View

      If I have a NVL object exposed to my view through a VM, and I want to add an extra item to the NVL that says "Make a selection" so that item can be the default in a combobox, should I add that extra item in the BO itself, or should I do it in my VM? I tried to add the extra item in the VM,...
      Posted to CSLA .NET discussion by Tim on Fri, Nov 4 2011
    • Re: example for NVL with MVVM

      The ViewModelBase class in Csla.Xaml is designed to manage a business object. It is only useful if you are using it to manage a business object, and you shouldn't bother with it for objects you don't need to manage. There's nothing to manage with a NVL, so ViewModelBase offers little or no...
      Posted to CSLA .NET discussion by RockfordLhotka on Thu, Oct 27 2011
    • Re: example for NVL with MVVM

      The current ProjectTracker code (in svn) uses a NVL in the ProjectEdit and ResourceEdit views/viewmodels. In reality though, I find that fewer and fewer NVL types are being used in XAML, because people want more than simple text in the combobox dropdown. So the more common case is to return a read-only...
      Posted to CSLA .NET discussion by RockfordLhotka on Wed, Oct 26 2011
    • Re: Shared ViewModels

      I am of the opinion that the viewmodel should be: Specifically user workflow focused (i.e. tightly coupled to the user experience and workflow/navigation) Broadly technology dependent (i.e. XAML, but not WPF/SL/etc) What this means, is that a viewmodel should focus on the user experience and navigation...
      Posted to CSLA .NET discussion by RockfordLhotka on Tue, Oct 25 2011
    • Re: Csla.Xaml.InvokeMethod exception handling

      InvokeMethod is deprecated and will be removed in a future version. You should consider using TriggerAction instead. It is more flexible, more powerful, and provides better debugging overall.
      Posted to CSLA .NET discussion by RockfordLhotka on Wed, Oct 5 2011
    • Csla.Xaml.InvokeMethod exception handling

      This is the scenario: WPF-MVVM-CSLA 4.1 application The views trigger the view model methods via Csla.Xaml.InvokeMethod There is an AppDomain-level exception handler in App.xaml.cs for logging any random, app-killing exceptions for analysis and troubleshooting The problem is that InvokeMethod.CallMethod...
      Posted to CSLA .NET discussion by BrianPerry on Wed, Oct 5 2011
    • ViewModel lifetime

      Hi folks, We're developing a business WPF application using CSLA4 and Bxf . We have just encountered an issue to manage the ViewModel lifetime. Cause, we didn't anticipate the ViewModel keep persisting through the pages. Per exemple, one viewmodel has a timer, to get data data periodically. And...
      Posted to CSLA .NET discussion by cconte on Mon, Sep 19 2011
    • Re: MVVM question

      Thanks for Your answer! That is the way I have actually implemented it. What keeps me confused, is the fact that my ItemCreator object knows nothing about this intermediate step involving the lookup... Isn't that business logic that should be placed within the responsible class rather than be loosely...
      Posted to CSLA .NET discussion by stefan on Mon, Sep 19 2011
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