Windows Presentation Foundation (WPF) is part of the Microsoft .NET framework used to create rich client user experiences for Windows application.

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Please help me with the optimization [on hold]

Resources in my program are not exempt and with prolonged use application, it can take up to ~ 500 MB of RAM, which is not I do? How to fix it? If Could you see the source code and share advice. ...
0
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0answers
14 views

Controlling a Windows Service from a WPF app

I have a WPF Control Panel app, where I'm trying to stay close to an MVVM architecture. The control panel (the "the CP") is for a WCF service ("the Scheduler"), hosted in a Windows Service ("the ...
4
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2answers
59 views

TabController for handling opening and closing of tabs

I created a class TabController to handle opening and closing of tabs. It needs some data from my viewModel, so should I pass in ...
1
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1answer
52 views

Wrapper classes for objects returned by 3rd party APIs

I am building a WPF application which uses a third party library to fetch objects which I want to allow the user to interact with. The objects are returned as interface types. Am I right in thinking ...
3
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1answer
46 views

Convertors converting unconverted objects

In my app, I have several convertors, like these two: ...
0
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1answer
22 views

Prefered Style Container for the Components in the DataTemplate

The following XAML is a close (tidied up) version of what I have use in my WPF application. If you have noticed there are two Styles applied to the same component ...
4
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1answer
79 views

Show dialog only once. Other calls should bring dialog to front, but otherwise not have a result

This code works, as far as I can tell, but there's something that just feels wrong about it. The intended flow is like this: If no dialog is showing Show dialog, return result else Move dialog ...
1
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1answer
72 views

Asynchronous method and collection binding

I have a WPF application, in which I'd like to bind a collection to a combobox using an asynchronous method : ...
5
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2answers
62 views

The cycle continues - VM's part 4

So, this is my refactored VM: ...
3
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1answer
41 views

Reducing repetition of sequence-like properties

I have a class that is a wrapper for memory positions of a hardware device. I need to data-bind each of this positions, so I created a class with hardcoded properties, one for each position, so that ...
1
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1answer
39 views

Using a DependencyProperty ChangedCallback as a validation measure

I have an UserControl where I declare two DependencyProperties ...
5
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1answer
50 views

Go Back with More Detail

I have a Back function, and it is growing. I also think this is terrible, but I don't seem to get how it can be improved: ...
2
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2answers
77 views

Viewmodel has lots of properties which bind to view [closed]

I created a configuration View. so it binds a lot of properties in Viewmodel. But I have a another class People and I want to ...
2
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2answers
58 views

Finding the shortest path through a 2d space with a display

I decided to implement most of the reddit Daily Programmer space probe challenge. My program creates a 2D space that have asteroids and gravity wells distributed (the percentage of gravity wells and ...
2
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1answer
79 views

Creating automatic resizing of subelements in WPF

I currently have this code: ...
4
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1answer
146 views

From event handler to command: on my way to MVVM

I have a WPF C# application that I want to move to a MVVM pattern. My first step is to remove the button click handlers from the code behind of the UI. I've found some examples online and then ...
2
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1answer
40 views

Detecting the attachment of a DataContext

In our application the views and the viewmodels are created in parallel to increase the performance and when the viewmodel is created it is attached to the datacontext. While there is no datacontext ...
5
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1answer
62 views

Handle Settings in Windows App

So, I fixed my problem with a public ViewModel for my MainPage like this: MainPage.xaml.cs: ...
4
votes
2answers
123 views

Wiring CollectionView and grouping it without slowing it down

In my previous question, I got heaps of good advice BUT no solution for the problem apposed. I applied the valuable learnings from the past on this.question and am also hitting it from a different ...
1
vote
1answer
95 views

Image cache for lots of images using WeakReference on C#

I'm developing an application to manage a player card-library from an online game. Each card has an image that is stored on disk with a numeric code, for example, the card with ID=1234 has his image ...
6
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2answers
111 views

Is my Delegate defined the right way and does it need to transform to a pretty Event butterfly?

I have read so many bed time stories and ins and outs of how delegates work and why events are to be replaced with delegates (surely not all the time) and just couldn't get my head around it. I am ...
4
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2answers
84 views

MVVM, Navigation, and More - Part 3

This is actually a second follow-up to Correct MVVM format, but I have made different changes. This is my ViewModel.cs class for my MainPage.xaml: ...
4
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1answer
95 views

Correct MVVM format

I have a Windows-Runtime app (very similar to WPF), and I am using (at least I think I am!) the MVVM style. I want to make sure I am doing this the proper way, and not just a working way. This is my ...
4
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1answer
58 views

Reacting to Boolean state in reactive ViewModels

When this ViewModel loads we kick off the IsAuthenticatedCommand: If the result of ...
5
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1answer
503 views

MahApps login dialog in splash screen with Caliburn Micro

We are working on an application with a splash screen. After a few seconds/loading all the data, a login dialog appears inside the splash screen, asking you to enter username and password. Think of a ...
3
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1answer
232 views

A ViewModel using ReactiveUI 6 that loads and sends data

Most of the Rx Compelling Examples™ load and store data locally which I don't find that Compelling. I spent some time coming up with how to best perform the following actions but want to make sure I ...
8
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2answers
315 views

Wiring CollectionView and updating itself without the need for Refresh()

I have been using your expertise developing my application using parts of WPF that I have never touched before. In this stage my View does all I need it to do, however, I am not sure if I've done my ...
6
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3answers
437 views

Best way of updating a list of unique items

I am wondering what the best practice for updating a list that only accepts unique items. Right now, I have a button that loads data from a database into a list. I can press this button numerous times ...
30
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2answers
2k views

Simon Says: “Make me a pretty game”

In Memoriam Ralph H. Baer, co-inventor of the original "Simon" game, died Saturday December 6th 2014, at 92. With his passing, this friendly little challenge inadvertently became a memorial to ...
3
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2answers
50 views

Creating list ViewModels in the correct way

I'm using Caliburn Micro to create a WPF application. So what I want to do here is a typical Master/Detail situation. I'm displaying a list of Users and you can can add/edit a User and save the ...
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1answer
294 views

Saving a collection of WPF user control layout into an XPS document

I am making an application to save a layout of user control into an .xps document. But, the export doesn't seem completed if the data is too many. I've tried to encapsulate each part with ...
4
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1answer
203 views

Checkbox binding to change the ListView's items source

I am using a checkbox to filter some components on my ListView by changing the variable's content which is bound to this ...
4
votes
1answer
171 views

Factory pattern with controls

I've created factory to create WPF controls. I have string with control name and I map it to enum. I think it's bad implementation of factory pattern. So please show me where I've made mistake. Main ...
5
votes
1answer
190 views

Implementing ShowDialog() style functionality without disabling any other windows

I need a simple prompt window to ask the user to do something with an OK/Cancel return. But I also need all Windows to remain functional, so a xx.ShowDialog isn't appropriate. This is my attempt. ...
6
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2answers
134 views

Is there a more efficient way of getting the max value from a list of sums?

Here is the code I have: ...
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1answer
49 views

Suggestion for refactor wpf project

I have done a WPF project and hope everyone can give suggestion for code refactor, especially for UpdateErrorList() method within the MainWindowViewModel.cs ...
12
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2answers
545 views

Understanding the MVVM concepts and validation of my code

I have been learning MVVM concepts and trying to implement it in my new project. I want to validate my work that I have been doing these past days. I want to know if I follow correctly the MVVM ...
2
votes
1answer
1k views

WPF ListView Pagination using MVVM Pattern

A few days ago, I was looking for simple pagination example and I decided to write my own version. It is one of my first apps using MVVM Pattern, so I am not sure I did right. I would appreciate if ...
6
votes
2answers
474 views

Noughts and Crosses WPF app

I've been learning C# and was looking for some feedback on my latest project, which is a standard Noughts and Crosses game. Two people are required to play (no AI yet). MainWindow.xaml.cs ...
8
votes
2answers
583 views

Add or view pattern with MVVM

I have a model called WorkOrder which I want to be able to manage from a single window. The required operations (for now) are only Insert and view, so this is what ...
2
votes
2answers
155 views

Custom TextBox control: AppendLine

Is there any way to improve this simple addition to the textbox control: appending a new line? ...
10
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7answers
2k views

How to simplify this if else statement?

How would you simplify/improve the readability of this code? Because even after my attempt to improve the readability I think it still looks messy. ...
1
vote
1answer
1k views

Access View from current/corresponding ViewModel

Sometimes when developing a WPF application, I need to access a certain Window (View) from the corresponding ...
3
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3answers
1k views

WPF Calculator Code

I've coded a calculator in C# with WPF as the UI. I wish to know mainly about these points: Ways of optimizing Better techniques, tactics and ways of coding this All flaws on the surface as well as ...
5
votes
2answers
633 views

Good practice for client code to MVC WebApi service

I have written a very simple web service with MVC and WebApi. Now I'm working on the client code which will be a WPF application (and soon Windows 8 Store/Phone app). What I have done works, but I'm ...
2
votes
1answer
189 views

ViewStateManager for more than just Controls?

Okay - so basically I have a login form that has a couple of 'states' it needs to display (connecting, input credentials, authenticating, invalid credentials, etc...etc...) - in the past I've ...
2
votes
1answer
184 views

Cross Thread Access to Object in ViewModel

This is a fairly straight forward question. I have a C# WPF MVVM application that call a C++ DLL to do some compilation/crunching. To update the UI C# application for progress updates I am using ...
2
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0answers
199 views

Possible memory leak with WPF Custom Control?

I might have a potential memory leak with my custom control. Do I actually have one? ...
8
votes
2answers
322 views

Am I handling “spot the missing DLL” right?

I have a .net 4.5 desktop script which has dependencies on some third party libraries (dll's). These libraries are used in my MainWindowViewModel. I need to check ...
5
votes
1answer
1k views

Adding groups to ListView depending on the data in a list

I have written simple code which loops through a list object and create groups in ListView depending on the data in the list. I have a list object of type ...