Questions tagged [mvvm]
The Model-View-ViewModel design pattern, which separates presentation from data and logic.
2
votes
0answers
127 views
MVVM Databinding, Commands, Async - MVVM.Light [closed]
I'm new to C#, WPF and MVVM and I don't want to make common mistakes right from the beginning and get used to them. I already read some similar questions on best practices for WPF/MVVM but none of ...
1
vote
0answers
67 views
Setting the Owner property on a modal dialog in WPF/MVVM using a Func
I'm looking to solve the problem of setting the Owner property on modal dialogs in WPF, while using IoC and MVVM patterns. I've seen (and written) all sorts of ...
1
vote
1answer
71 views
Addition Program using wpf through MVVM
I'm new to MVVM and WPF. Please suggest whether this is okay or I need to correct my understanding of MVVM which I confess is very limited as at the moment.
I have created a simple addition ...
11
votes
1answer
229 views
Filter Collection by Multiple Criteria
I want to the user to filter a list of receipts by various criteria. Just the regular, an empty filter should show all items, an entry in customer should show all receipts from that customer and an ...
7
votes
0answers
75 views
Visual Studio exception visualizer for lengthy exception messages
I use Autofac a lot and for everything and when you make a mistake and forget to register a dependency etc. it'll tell you exaclty what's wrong. Although its ...
1
vote
1answer
142 views
Android MVVM application architecture
Inspired this guide: https://developer.android.com/jetpack/docs/guide
I try to build some app with similar architecture.
App interact with remote API via http protocol (json responses from server). ...
0
votes
0answers
604 views
Flutter - Implementing a simple ListView with MVVM
I've implemented a simple ListView in MVVM that displays a few PrepSteps (short form of PreparationSteps). While implementing I wasn't sure about if my approach is "...
1
vote
0answers
332 views
LiveData, MVVM and Repository Pattern
Is this a good approach or I've just found a nasty workaround?
I'm using MediatorLiveData class because seems useful to update the source of a ...
1
vote
1answer
100 views
MVVMLight Toolkit Data Binding Technique
I'm simulating my real-world application by using a really simple demo app here, but it has the same concept. The question is MVVM Light Toolkit specific, as the ...
1
vote
0answers
105 views
Xamarin Forms with Ninject navigation service
I am new to Xamarin Forms and I have been searching online finding ways to set up navigation in a MVVM fashion. In particular I am designing around a concept I found here. However, I am using Ninject ...
4
votes
1answer
112 views
Accessing View from ViewModel
Having a view (grid control) that provides some functionallity via methods (primary SerializeView / DeserializeView) that should be called from the view model which is bound to the view.
One point to ...
-1
votes
1answer
61 views
Model Exposure with MVVM [closed]
I have been starting to learn MVVM to give my WPF projects better structure.
I have to sample classes, DeviceModel and ...
0
votes
1answer
104 views
Saving ResourceDictionary theme
I have the following command bonded to my button, It's supposed detect the current used theme and change it (Dark or Light).
...
2
votes
0answers
176 views
Switching between ViewModels using IoC in a MVVM WPF application
I have a project that uses Caliburn.Micro to implement the MVVM pattern. For IoC, I am using MEF. All the ViewModels are marked ...
4
votes
0answers
54 views
Viewport for Card Match Game
This is the 2nd half of my Memory game. The first half can be found here. The repository can be found on Github.
I am using SFML 2.4.2. In this project I focused on a few key aspects of design and ...
6
votes
1answer
239 views
Winform, with a workaround to avoid dependencies
I'm working on a Winform project. We currently have a modular design (shown in the image) in our project. Where on every user action (button clicked or selection changed etc), first we set the Model ...
5
votes
1answer
354 views
Data Model for a Memory Game
I have a Memory style card matching game. The project is big enough that I want to break up the review. The first part that I am giving you is the data model. If you are interested the full project ...
2
votes
1answer
1k views
Login modal with MVVM pattern
I would like some feedback on whether this follows MVVM principles well.
The MainPage has a Login button that opens the login modal page. Upon successful login, the LoginPageViewModel will raise an ...
2
votes
0answers
103 views
Initializing child windows in MvvM
I have a MvvM application that is working very fine. However I am not sure if I'm writing a clean code, especially the part handling child windows with their controller.
So to begin, i have this ...
5
votes
2answers
378 views
Using a service interface to get user input from dialogs
I haven't worked with WPF/MVVM for a while, but now I'm back fixing some issues with one of my old apps and remembering the struggles I always had when dealing with asking for user input (eg. showing ...
1
vote
1answer
2k views
Testing async method call from constructor
I have a project where I want to build a more sophisticated ToDo list - basically a personal project management system. I'm just starting out with the project, and I'd like some feedback on whether my ...
1
vote
0answers
196 views
A ViewModel build with ReactiveUI 8 to get web images
This is a practice application that I built to learn Rx.Net & RxUI. It follows the MVVM pattern and is written in C# with WPF. Here is a link to a question I asked during the development, which ...
1
vote
1answer
196 views
Using Vue to help form validation with weight for age
I am refactoring a very old web page which calculates bolus and infusion drug doses for children from premature through to young adulthood.
One of the most common drug errors is accidental 10 fold ...
1
vote
2answers
150 views
C# MVVM pattern sanity check
I am needing to get a sanity check to make sure I am setting up my model and viewmodel correctly. I believe what I have is correct even though I have seen some documentation that shows different ways ...
3
votes
1answer
879 views
Test all properties with single test function
In writing unit tests for c# functions, there is a good case made for testing properties. In testing those properties, I felt there should be a few goals.
Provide a wide range of inputs
Test ...
1
vote
0answers
660 views
Prism find active/existing ViewModel
I was facing an issue where I want to retrieve existing/active ViewModels from the Prism runtime.
Here's the code I've done to achieve it:
...
1
vote
1answer
679 views
Combobox with multiple itemssources MVVM
I'm trying to make a list of either customers or suppliers based on a radio button. I have a solution that works but I want to know if it is a correct solution to work with the MVVM-model. Next to ...
3
votes
0answers
272 views
Media player in WPF - Event binding
I recently started making a media player, this is the first time I'm using WPF and I found that most project are utilizing the MVVM architectural pattern, I haven't used that one either but I decided ...
2
votes
1answer
773 views
MVVM Calling command by name from CommandBindings
For example I have this property in my ViewModel.
...
2
votes
1answer
2k views
MVVM pattern in Xamarin login form
Please let me know if the MVVM pattern I followed in this is correct or not.
Here is the code for ViewModel
...
3
votes
1answer
558 views
Notify one of hundreds of viewmodels with MVVM Light messenger
Assume a viewmodel for hosting a collection of item viewmodels. There can be some hundreds of items in the collection. The items are part of the business model and have an id and a name. The name for ...
2
votes
1answer
250 views
Applying EF core in Universal Windows Apps using a large database
I am building my UWP app and really stuck in the architecture. For the past few days, I have been reading MVVM, Entity Framework, SQLite, Code First, etc and I am confused how I will implement ...
4
votes
1answer
725 views
Maintainable networking layer architecture
There are so many different solutions and examples on how to build a proper networking layer, but every app has different constraints, and design decisions are made based off trade-offs, leaving me ...
9
votes
4answers
607 views
ViewModels Mediator with multiple generic callbacks
I'm developing a mediator for an MVVM application. This application lets employees file tickets with IT support to ask for help.
The mediator communicates messages and triggers callbacks between ...
2
votes
1answer
144 views
Extension vs Class For ViewModel
What the advantages & disadvantages to each of these approaches pertaining to creating file that takes care of the view configuration to reduce a controller's file size.
Main Purposes Are:
...
2
votes
0answers
684 views
Handling single items using MVVM and Android Architecture Library
What I have done so far
Since I would like to rebuild a project using mvvm-pattern with the following requirements to use dagger 2 for di, RXJava for reactive, retrofit for webservices, greendao and ...
1
vote
0answers
55 views
Weight Lifting App to calculate a One Rep Maximum
I'd like feedback on the main entity in the Core Data model of my "One Rep Max" weightlifting calculator. All feedback is appreciated and in particular, I'd like to know if I've done a decent job of ...
2
votes
1answer
2k views
0
votes
1answer
2k views
Simple MVVM Create, Update, Delete Records using WPF [closed]
I'm new to MVVM and WPF. Please suggest whether this is okay or I need to correct my understanding of MVVM which I confess is very limited as at the moment. The default namespace to all classes as <...
8
votes
1answer
760 views
CommandBinding refresh on parameter changed
I need the command I am executing on a datagrids context menu to know which column was clicked on.
XAML
...
0
votes
2answers
949 views
Using “Lookup Logic” in a WPF Converter (vs extra properties in “model” classes) [closed]
There seems to be a point of contention on my project team regarding what method should be used when trying to display something about an object that requires "lookup-logic". Namely, should their be a ...
3
votes
2answers
1k views
MVVM Navigation WPF
Currently, I'm trying to learn every aspect of the MVVM design pattern.
So basically I've written a little WPF App where I'm trying to understand Navigation in MVVM, the app has one MainView wich ...
1
vote
1answer
59 views
Transitioning a NavigationPane to use MVVM
A friend of mine asked for help with his UWP app. Me being a .NET developer with an okay amount of WPF experience decided I could give a hand as well as give some good tips and tricks. After a few ...
3
votes
2answers
2k views
Window Factory and Manager using MVVM pattern
I am fairly new to Factories and Dependency Injection in MVVM.
I've build my View(Window) factory with help from SO, and I would like to know if I had implemented everything properly(code works just ...
3
votes
1answer
166 views
Managing documents with manager class
So I have a program that visualizes data from files (csv,txt,etc.). These files are saved to database as individual tables. In my application I have DocumentExplorer...
6
votes
1answer
99 views
MP3 tag Project in MVVM style
After reading the books "Clean Code" from Robert C. Martin and the "Head First Design Patterns" book from Elisabeth Robson I decided to make a mp3 tag application.
I tried to do it in the MVVM style ...
3
votes
1answer
609 views
Trying MVVM on timer app
Check me:
Model should do everything. That's where all functionalities and features are accommodated. It has some properties, that I can access and use. ...
4
votes
2answers
426 views
Catching exception inside model
Is it normal to catch exception in concept of MVVM inside model? Or how should it be? How to improve this code?
This is simple application that allows user to drop .pfx certificate on the label. <...
6
votes
1answer
10k views
MVVM - ObservableCollection & Entity Framework DbContext
I'm trying to catch WPF using MVVM pattern, where my set of models is implementing ObservableCollection as well as Entity Framework's ...
1
vote
1answer
3k views
