CSLA .NET

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    • 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 (Forum) 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 (Forum) 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 (Forum) 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 (Forum) 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 (Forum) 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 (Forum) 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 (Forum) 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 (Forum) 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 (Forum) 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 (Forum) by stefan on Mon, Sep 19 2011
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