Using LinQ to filter ObservableCollection

I have a MVVM application and I am trying to make filtering through LinQ work on my ObservableCollection that is gotten from database based on Entity Framework. In View Model I have this: public class MenuListViewModel : BaseViewModelCollection<Menu>

Dynamic loading of components and templates with VueJS

I'm considering using VueJS for a multi page website. In the official example of routing, they show that you can dynamically change the template and component based on the URL, but they still have all the HTML templates and JS components in one file

Link width to a columnWidth of a grid not visible in XAML

im trying to bind the width of a button and a TextBox to the width of a column they are in. Additionally i want to change the visibility of the whole grid. I set visibility to "Collapsed" and in the code behind file i change the visibility to vi

Formatting data in MVVM in the Windows Phone application

I have a DataModel and a ViewModel working successfully together with my xaml view. In the view I use databindings. In my DataModel I have some properties like Distance declared as int. When displaying the values in view, I want a formatting like add

Listen to generic events

I have a function I would like to run on after update of a lot of different text boxes, is it possible to listen for a generic after update event rather than the specific events? So rather than 100 individual calls to the function, just one listener?

How can I attach two combos in wpf

I have 2 combo boxes, one that contains a list of 'Items' and another that contains a list of 'Subitems'. The list of Subitems depends on the currently selected Item. I've got most of this working (by binding the ItemSource of the Subitems to a Possi

View and edit ObservableCollection & lt; & gt;

I want to be able to display and change the values of ObservableCollection<> in UI. Does it possible? I display it with ListView but I can't change them.You could use a DataGrid instead of a ListView. DataGrid allows cell edition.

JSON Function - DropDownList Waterfall - Model Update

Premise: I'm new with MVC, and my english is not perfect, I hope you'll understand my post, otherwise I'm here for explainations. I'm working on a project created by another developer in ASP.Net MVC and I have this problem: In a View I have two casca

WPF MVVM New Editable Combobox Value Is Null

Tried all the solutions for similar issues around here, still no go. I have a ComboBox that should work for selection of existing items and/or for adding new ones. Only the selected item part works. Category is just an object with a Name and Id. Than

How to manage multiple windows and dialog boxes in MVVM?

Is there any standard method for showing dialog windows, opening and closing them and retrieving data from them, using the MVVM pattern? I have seen this: I want use for show a dialog for special (View/ViewMode

List of WPF Link Enums (or similar) to the list of checkboxes

I would like to bind a checkbox list to a collection of enum values in WPF. The enum is not [Flags]. Context: It is for filtering a datagrid, in which each item has a instance of my enum. It doesn't necessarily need to bind to an List, a fixed size c

Tabulation data lost on the selected item has changed MVVM

I have been trying to do this for ages and having no joy whatsoever. I have a ribbon window of the following hierarchy: MainWindow MainContent (Tab Control) TabContainerViewModel ViewModelBase View model base has an ObservableCollection of tabs type

Different views / controls userc on each tab of a TabControl

I'm trying to write a program that uses tabs to hold different usercontrols. What I currently want to happen is the user clicks a find button, a new tab is created, and a find screen appears inside it. Using the find screen the user can select client

Lightweight display templates for WPF

I understand MVVM's usefulness in the context of a large team developing a shrink-wrapped application over a long period of time. But in the context of an internal LOB application, MVVM seems overkill and I'm having trouble swallowing the overhead of

Validation of empty fields in MVVM

I have a XAML with about 100 controls. All of them are bound to class Student. I can validate such pool like Age, or Name, but how to validate controls,which user not even touch ? For example for field Address. Address couldn't be null, but user forg

Wpf Mvvm ComboBox

I am new in the Wpf world, so I created a couple of views and all of them have at least one ComboBox, as I am using the MvvM pattern, I get my self re-typing all the time the same line of codes to fill the Combo and to get the SelectedItem (creating

I still do not have MVVM!

Perhaps I have been doing Flex development with Frameworks like Cairngorm too long but I still don't get MVVM. I am aware that Cairngorm is a framework and MVVM is a design pattern, but what I am comparing here is Cairngorms implementations of design

WPF Dispatcher, long-distance worker and a lot of pain

Ok this may be really simple but everything I try just seems to hit a brick wall. I have a view model with two properties, which are bound to my WPF form: bool IsWorking {get;set;} ObservableCollection<OtherViewModel> PendingItems {get;set;} I have

WPF data link performance

I am building an wpf app using MVVM. I have viewModels the employ lazy loading like below: public class AssignmentsViewModel { List<AssignmentViewModel> _Assignments; public List<AssignmentViewModel> Assignments { get { if (_Assignments == nul