Questions tagged [wpf]
WPF is a graphical subsystem for rendering user interfaces in Windows-based applications.
265 questions
4
votes
1
answer
104
views
Async-ifying WPF Window.Show()?
I'm working on a WPF application which has many user interactions which start with opening a non model window, allowing some interaction with the window and the rest of the application (think ...
- 41
2
votes
2
answers
302
views
How should multiple ViewModels communicate in a larger WPF MVVM application?
I’m working on a WPF MVVM application that has grown beyond just one or two User Controls. I now have multiple ViewModels that need to react to each other’s actions (e.g., selecting a customer in one ...
- 29
-3
votes
1
answer
232
views
Screen share with Windows Remote Desktop Services
I need to create a WPF application that gives me the possibility to connect to other computers in the same network. I'm looking into Windows Remote Desktop Services, but it seems like it doesn't have ...
- 97
1
vote
4
answers
891
views
How can I keep accurate time in a Windows Forms (WinForms) application?
I am an inexperienced developer fresh out of college. I was handed a Windows Forms Application to work on.
The application previously relied on system time. They wanted me to make it so that we could ...
- 51
2
votes
2
answers
4k
views
WPF MVVM - Pass data from child-view to parent
I'm trying to implement the MVVM-pattern in a new WPF-application.
I'm using the MVVM Community Toolkit to reduce boilerplate code that comes with the pattern.
In my application, I'd like to have a ...
- 65
0
votes
0
answers
171
views
Dependency Injection Usage
I'm very new to DI, and must admit, am having a hard time understanding to what extent it should be used in an application.
Even in a basic project, you can have hundreds of classes that have ...
- 19
0
votes
1
answer
340
views
Dependencies traveling through hierarchical viewmodels
Often I want to open a new window from within some view.
I see opening a window as view logic. So I don't want code in my viewmodel that creates/opens/changes Windows or anything else that
interacts ...
- 331
0
votes
1
answer
372
views
WPF plugin system - Dependency injection in plugin class libraries
The main application loads plugins, list them and when user selects one it is initialized and displayed. Each plugin is a complex class library which contains several views/viewmodels/repositories/etc....
- 3
0
votes
0
answers
689
views
What approach for this kind of drawing application in C#/WPF
I've got experience with WPF, but I have always been creating standard UI's. I want to build a drawing application for electrical wiring diagrams (single-wire diagrams).
Example of the kind of ...
- 331
0
votes
1
answer
2k
views
Folder and Project Structure in MVVM for WPF Solution
I know there are already questions about file structure in MVVM but I haven't found the pros and cons for the following two structures. What would be better for a large-scale project, and why choose ...
- 3
2
votes
1
answer
335
views
Direct Database Access for Desktop GUI or via Application Server?
We have a scenario that is in a VERY tightly controlled industrial environment. This is all C# on Windows.
We gather data from different types of sources - sensors monitoring environmental data, ...
- 29
0
votes
1
answer
864
views
MVVM - Wrapping Class For ViewModel
I am using a networking library I created which contains a Client class. I have a GUI which will display all these clients in a ListView with columns, such as one containing their online status. The ...
- 113
1
vote
1
answer
2k
views
Clean code and SOLID principles in WPF/MVVM view models?
I'm currently reading "Clean Code" by Robert Martin (which I should have read years ago), and it's given me a bit of a wakeup call, especially regarding keeping methods and classes small, ...
- 1,145
-2
votes
1
answer
407
views
How Should I Go About Refactoring My Code With Dependency Injection? [closed]
I work on WPF applications used in testing hardware. I need to make my code base more testable and re-usable. I believe DI would help, but I'm not quite sure where to start. I've done my best with the ...
1
vote
0
answers
2k
views
WPF Best way to create viewmodel from another viewmodel
Often I want to open a new window from within some view.
I see opening a window as view logic. So I don't want code in my viewmodel that creates/opens/changes windows or anything else that interacts ...
- 331
1
vote
0
answers
136
views
Issue implementing the Command Processor pattern using MVVM for WPF?
I'm trying to implement the Command Processor pattern using MVVM for WPF. The Command Processor pattern that I'm roughly following is the one described in the book Pattern-Oriented Software ...
- 133
2
votes
1
answer
378
views
Data visualisation application for WPF and MVVM
I was wondering what is the best approach for a Data visualisation application for WPF and MVVM
The key points are:
The data is loaded, or needs just a little preparation such as pulling out ...
- 285
2
votes
1
answer
572
views
How to set up MVVM for highly dependent hierarchical objects with 3D representation
Imagine a program that designs plates with geometric cutouts. You start with a rectangular plate. A plate can have one or more rectangular depressions carved out of it. Each of these can have one or ...
- 121
1
vote
2
answers
850
views
C# WPF - Is it acceptable to have a dependency to PresentationCore.dll in domain layer?
We are working on a .NET desktop application written in C# and WPF, that communicates with a REST API server.
The software has a layered design and consists of multiple projects.
One project for the ...
- 331
3
votes
4
answers
2k
views
C# How to avoid memory leak in this case
I've got a Window, which gets a viewmodel instance injected into its constructor.
The window sets its DataContext to that viewmodel.
The viewmodel contains a command to "submit" the window ...
- 331
0
votes
1
answer
178
views
Does default deleting behavior of Datagrid violate mvvm pattern and separation of concerns
In WPF when Datagrid's CanUserDeleteRows property is set to true, then conveniently I don't need to implement deletion of elements from an underlying data structure. But it does mean that deletion ...
- 285
-3
votes
1
answer
1k
views
Inter application communication .Net
I have multiple WPF applications running different programs some of them are interconnected so one might have to start another at some stage. I need a way to communicate and share large amounts of ...
1
vote
2
answers
1k
views
Application made up of multiple executable programs
I am developing an engineering application (WPF, C#) that consists of a collection of other programs that perform specific engineering tasks. I guess you can think of it like Microsoft Office, however ...
- 21
-2
votes
1
answer
250
views
WPF MVVM using TPL - should I handle exceptions in the back or front end?
I have a WPF MVVM application, the WPF is the UI frontend and I have another project in the same solution that does DB access, I do this by starting a Task from the frontend that executes the backend ...
- 25
1
vote
1
answer
856
views
DbContext lifetime in desktop app with SQLite
I am creating a small data-driven desktop application using .NET 5 with WPF, ReactiveUI, Dynamic Data, and EF Core 5. The app uses a local SQLite database to store all persisted state, and relies ...
- 332
0
votes
0
answers
86
views
Is it secure to make a seperate project which checks whether a license is active
I am trying to make a project which will help me to implement feature based licensing in future projects. The projects in this solution are C#/WPF Projects.
So I have a Helper-Project with a class &...
- 101
1
vote
2
answers
365
views
How to edit and monitor changes in a complex Datamodel
I'm working on an Editor-GUI (C#, WPF, Windows-Desktop) for a quite complex domain model. The domain model consists of many different node types mainly coupled in a hierarchie. Also it is possible to ...
- 46
1
vote
0
answers
159
views
Should all interactions go to ViewModel?
So basically I guess I know the role of MVVM, but correct me if I am wrong
View: Basically it whats the users sees + it takes user interaction
Also View: It shouldn't know what the model is ... but it ...
- 11
1
vote
1
answer
810
views
Communication mechanism among windows or pages WPF
I work with C# and WPF and not using MVVM approach. One of the important part of applications is communication among Windows Pages and UserControls. In MVVM they do it behind the scenes and let you ...
- 111
-1
votes
1
answer
1k
views
MVVMCross multiple ViewModels and Views per Window
I may not being fully understanding MVVM or how MVVMCross works, but my understanding of views is that they are components of a window rather than the window itself.
When you start up MVVMCross in C# ...
- 101
2
votes
2
answers
1k
views
Is it right way to make Window to Singleton and call Visibility and Shutdown() methods directly in WPF?
There is a parent window that is the basis of the program, and there are several sub windows under it. Editor is one of the sub window and I'm making it. The code is as follows:
// This is Code-Behind
...
- 71
1
vote
2
answers
3k
views
What is the proper way to handle with View and ViewModel in WPF?
Currently, I'm making an Editor with MVVM pattern in WPF. Editor simply take an instance of a specific type as a reference and modifies it. The following code is the expected usage when editor ...
- 71
0
votes
0
answers
81
views
Is a lot of Wiring code a sign of over engineering or bad design?
We have a classic wpf line of business software at work. Put in a lot of data, save it, calculate some things, put out some useful data etc.
Visually we have a dockable pane setup, like visual studio ...
- 99
14
votes
5
answers
18k
views
WPF UserControl Reuse With MVVM
I'm struggling to find an elegant and idiomatic way of coding the following scenario using the MVVM paradigm in WPF and was wondering how other people would approach it.
I have a UserControl in my ...
- 363
0
votes
1
answer
276
views
CRUD actions rexponsibility in the MVVM
In Form-based application (WPF/MVVM/SQLServer), consider the form that handles the classical actions that you can perform on any entity.
Create
Read
Update
Delete
The problem, in general terms, is ...
- 849
0
votes
1
answer
279
views
Structuring code to support console output and WPF views
Premise: This is for learning purpose.
I'm trying to adapt my Console Application code to be served through a WPF Application GUI that I would like to create.
One problem is struggling me.
Actually ...
- 111
-3
votes
3
answers
3k
views
Better way than singleton pattern to ensure single instance of class
When this question has been asked before on StackOverflow in 2011 and 2015, all answers as of now suggest to use a Singleton.
But that’s not right.
Singletons are defined by the Gang of Four to ...
- 27
0
votes
1
answer
172
views
Best practice for populating a property of an entity object which requires a second database call
I'm running a commercial accounting software packages which uses a SQL server database. I've also developed a WPF application which is basically a slimmed down version of the commercial software.
...
- 109
-1
votes
2
answers
311
views
Subscribing to events in factory -- better place?
I'm implementing an event-driven game in WPF and have the following Blackjack class:
public class Blackjack
{
public Dealer Dealer { get; } = new Dealer();
public Player Player { get; } = new ...
- 1,273
2
votes
1
answer
145
views
Provide overall application status in global exception handler/crash report
In my UI application (WPF/C#, using MVVM design pattern), I have implemented a global exception handler which catches all unexpected (hence uncaught) exceptions and reports the application crash to ...
- 31
1
vote
2
answers
2k
views
Throttling notifications from child ViewModel to parent ViewModel
I have a child view-model which notifies on a property change:
public class ChildViewModel : INotifyPropertyChanged {
private bool isSelected;
public bool IsSelected {
get => ...
- 693
0
votes
2
answers
2k
views
Is it okay to pass my model into my view model via its constructor through MVVM practices?
public class LDLTrackViewModel : RailwayViewModel {
private LDLTrack _ldlTrack;
public LDLTrack LDLTrack {
get => _ldlTrack;
set { _ldlTrack = value;
...
- 41
2
votes
4
answers
1k
views
Why does C# not have automatic dispatchers
Why does C# make you put in a dispatcher for a different thread to update the UI?
Example:
Dispatcher.Invoke(() =
{
lblerrorName.Content = "";
});
It always gives the 'running on different ...
- 91
0
votes
1
answer
468
views
Where do I save a Canvas "center position" coordinate in an MVVM architecture?
Assume I have a canvas that has rendered shapes. I can drag-move around that canvas as if I was in a zoomed in image to move all shapes around. Between the Model and ViewModel I have a ServiceLayer (...
- 405
7
votes
3
answers
2k
views
How to avoid duplication of types in MVVM
I'm learning the MVVM pattern and something that comes up often is a duplication of data-types.
Say I have a Person datatype. Intuitively I want it to look like this:
public class Person
{
...
- 201
0
votes
1
answer
748
views
Designing a WPF / MVVM architecture where view behavior changes in different states
As part of my bachelors thesis, I'm trying to develop something akin to a painting program. That means, I have a toolset, be it selection, drawing, highlighting, etc.
I'll have a canvas that displays ...
- 405
0
votes
0
answers
2k
views
.NET WPF Best way to store a connection credential
I have an application that connects to SQL Server using windows credentials, which works very well for the domain paradigm. The client is now transitioning away from having a domain server, and is ...
- 115
0
votes
1
answer
51
views
Separate or not separate(Window and datagrid)?
I am new to WPF but actually I need to code in it.
I have got a **UserControl(Window)** and there is a DataGrid in it.
DataGrid can be used somewhere else in the future, but not 100% sure.
Me and one ...
- 111
0
votes
3
answers
3k
views
Keeping objects in RAM vs more queries to the database
So this is my DataStructure:
Project
- Name
- ID
- Image
- History
- User
- Comment
When my application first starts it is pulling all projects with all details.
obviously ...
- 105
0
votes
1
answer
380
views
Unit testing for a method in a class which uses constructor DI (prism)
I have a class that uses constructor DI for IEventAggregator
public SomeViewModel(IEventAggregator eventAggregator)
{
this.eventAggregator = eventAggregator;
...
- 443