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Questions tagged [view-model-pattern]

25 questions
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In VIew how to use ViewModel with ViewModelProvider

Here is my MineSweeperView class: class MineSweeperView : View { constructor(context: Context?) : super(context) constructor(context: Context?, attrs: AttributeSet?) : super(context, attrs) private var userViewModel: UserViewModel …
Dominik
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why is my Listview ItemsSource null (uwp app c#)

I'm trying to bind a List in my ViewModel to a ListView in my Page but I can't get it to work, the ItemsSource is always null allthough the list is populated with values. This is how I set the whole thing up. theese attributes are added to the page…
narancha
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WPF MVVM ViewModel containing ViewModels not updating

I'm very new to WPF and MVVM, and it's been causing me a lot of headaches. Due to issues with navigation, I decided to just have all my content visible at once. I thought I would create a new ViewModel (MainViewModel) to contain my two other…
user1959309
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MvvmCross: Hybrid Xamarin.Forms and Android Activity Application

Being new to MvvmCross I've decided to create a small Xamarin.Forms app. I have a MainPage.xaml tied to its ViewModel MainViewModel.cs which is displayed first. I have a FirstView.axml located in the droid project along with its activity. The…
Aiden Strydom
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Trying to create MVVM ViewModelFirst with nested Views and nested ViewModels

I am new to using MVVM and am trying to find a reasonably elegant approach using a ViewModel First strategy while creating an interface of nested Views. I have taken a brute force stab at making a workable solution but I can't imagine this is an…
Jon Anderson
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How to control selection from ViewModel of MultiSelectTreeView

I've got a WPF MultiSelectTreeView (downloaded from here: http://unclassified.software/en/source/multiselecttreeview). Now I want to control, which items the user selects. A simple example is that he shouldn't be able to select child nodes of…
timnot90
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Can a 'ViewModel' hold 'DomainModel' type property

In asp.net MVC 4, I have 2 DomainModels Product Order and a related ViewModel OrderDetailsViewModel In my "OrderDetailsViewModelMapper" mapper file I am manually mapping these 2 DomainModels to my ViewModel. Mapper file…
Jaish Mathews
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Populating mvc4 viewmodel with multiple List<>

I have a list of 22 categories with about 8 menuItems per category, but my viewmodel ends up with only the last item in the list. I'm having a hard time seeing where the problem is. At this point I'm sure the problem is in how I'm populating the…
NNassar
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How do I add a Custom Query for a drop down and retain the View Model Pattern?

I've read many articles which they state that querying should not be placed in the Controller, but I can't seem to see where else I would place it. My Current Code: public class AddUserViewModel { public UserRoleType UserRoleType { get;…
xivo
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How to bind child view to parent viewmodel in ExtJs 5?

I need to bind child view to viewmodel of parent view. my structure is - parentView{ items : [{ xtype : 'childview' }] } parentViewModel{data : NAME} childview : { items : {[ xtype : 'label', bind : {value :…
Krishna Agrawal
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