I have a ViewModel defined like this: public class LocationTreeViewModel<TTree> : ObservableCollection<TTree>, INotifyPropertyChanged TTree : TreeBase<TTree> I want to refer...

I got a WPF application that shows a button bound to a command like that: <Button Command="{Binding Path=TestrunStartCommand}" Content="GO!"> The command is defined like that: public ICom...

I am Using MVVM with WPF. i am halted in a way, i want your views about this. i am firing Mouse Events using MouseBehaviour.cs class , Is there any other way to handle Mouse Events in MVVM WPF usi...

I'd like to handle the Closing event (when a user clicks the upper right 'X' button) of my window in order to eventually display a confirm message or/and cancel the closing. I know how to do this ...

I am working on a project in WPF using the MVVM Light framework. I have a DataGrid that is bound to an ObservableCollection<Worker>. As of now, when I add a new item, the DataGrid doesn't upd...

I am using MVVM light with WPF. I want to set button background color based on some specific condition through ViewModel. Kindly suggest some way to get it. Thanks

I am using MVVM-Light RelayCommand private ICommand myRevertCmd; public ICommand Revert { get { if (myRevertCmd == null) { myRevertCmd = new RelayCommand(RevertExecute, CanRevertExecute); }...

When starting a new mvvm-wpf-application, I usually include mvvm-light right at the start. That works fine, until my application grows. Some where along the line the ViewModelLocator becomes huge ...

For a new project I want to try out the new .net core 3.0 WPF project and I want to use it in combination with MvvmLight. However in .net core and in combination with Visual Studio Code you don't g...

So far as I understand, SimpleIoc uses GetInstance method to retrieve an instance of a class that is registered. If the instance doesnt exist, it will create it. However, this instance is cached an...

Here is the basic pattern of using MVVM Light's Set method: public class MyViewModel : ViewModelBase { private string _text; public Text { get{ return _text; } set{ Set(()=>Text, ref _tex...

Adding MVVM Light reference to a WPF projects adds a large number of system assemblies to the list of dependencies in the accompanying MSI Setup project. These assemblies (50+ in number) are then c...

I am working on a WPF application. I have implemented error handling and implemented error mail sending feature for this application. So admin will get the error message if any error happened in th...

I've build this example to show my issue. I need to create a hierarchy to be shown in a treeview, treeview to be bound to the view model. In the good old days of VB6 I would have used DoEvents to u...

Could somebody be kind enough to give me an example of how to Send and Register custom objects between classes using MVVM Light's Messenger or point me to a tutorial that covers this (preferably a ...

I'm trying to adjust my WP8 project from self made MVVM implementation to MVVM Light. The application compiles without errors, but when I open my MainPage.xaml in Expression Blend, I will get this...

So I've been doing quite a bit of digging and I haven't been able to find any real definitive answer to this anywhere. I'm writing an application using MVVM Light and WPF. I have a service that i...

I've been programming my Windows 8 apps and Windows phone apps using MVVM. I'm about to be exposed to MVVM Light and I was just wondering what the difference between them are? I imagine MVVM light ...

I am wondering why MVVM light is missing command with async execution? I believe there are many cases where this could be useful, so let me name one. Let's say that our UI contains one container th...

I'm learning WPF with MVVM Light and i've an issue with my Portable Class Library. I follow this tutorial: http://www.codeproject.com/Articles/536494/Portable-MVVM-Light-Move-Your-View-Models I cr...

How can you create a binding between a ViewModel and a View? In the past there was a Locater created in App.xaml and then on the view you had this: DataContext="{Binding MainViewModel, Source={St...

Please help - I'm getting lost! I'm writing a small desktop application which has some controls and some screen. This should later be integrated with a small web site, also having some screens. Th...

I am puzzled by a (I thought) simple thing to implement; make a UI element visible depending on a binding to a view model. I use the mvvmlight framework. When the binding (boolean) is set to true t...

I have a view that has a group of images I get from a web service I receive them in a list of this class: public class ImageModel { public int Id { get; set; } public string Name { get; set; ...

Starting with WPF and I like the MVVM pattern where I have a ViewModel locator as I'm quite used to IoC usage. However most blogs/articles say that a Usercontrol should not have a ViewModel. ...