Model View ViewModel (MVVM) is an architectural design pattern that separates the page (the View) from the data (the Model) by way of its presentation logic (its ViewModel).

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How to add rdlc file to ReportViewer in WPF projects

I've added a reportviewer in a wpf app via the xaml designer of my main window and I'd like to add an existing rdlc file to it. I've had a very long google session and I've been unable to find a ...
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mvvm confusion with canexecute and binding commands

I'm having a seriously hard time wrapping my head around the logic in the tutorials and posts about this subject. I'm trying to implement it in a wpf application I'm writing. Basically, I'm using a ...
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Attaching mouse events on ListBoxItem with Binding on ItemTemplate

I have my WPF UserControl which is composed from several stuff and a ListBox. The ListBox have a binding on the ItemsSource and the ItemTemplate properties. The ItemTemplate is bind to my custom ...
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C# MVVM cross Windows Phone 8 onNavigateTo and Init

i've got a question. I got a project in C# , Windows Phone 8 MVVM cross. I got a ViewModel and View off course. In the ViewModel I have an Init method to getting parameter from another ViewModel. In ...
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Saving a WPF canvas as an image following MVVM Pattern

I have a canvas, e.g. similar to this solution or many others using the ItemsControl. Now I want a button which should be bound to an ICommand. This command should call a method of ViewModel class ...
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Text box value is not updated in ViewModel when changing in the view in WPF

When I change the text box value, it is not updated in the view model. This is my text box xaml in the view <TextBox Height="23" HorizontalAlignment="Left" Margin="153,65,0,0" Name="textBox2" ...
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36 views

In Knockout.js, is it wise to put events in the viewmodel? [on hold]

In Knockout/Model-view-viewmodel (MVVM), the vm contains data for the view and related functions. Is it wise to place events in the viewmodel too?
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Listview with scrolling background image

I am trying to create a ListView that looks like items sitting on a shelf. I am able to get the shelf background on the list view like so: <ListView.Background> <ImageBrush ...
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Kendo Window Declared in HTML How to Open?

I have a Kendo grid that I have created using the HTML-based declarative syntax <div id="grid-view" data-role="grid" data-height="700" data-selectable="single" ...
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13 views

MVVM Light IoC not Binding? What am I missing?

I have a windows 7 phone application that I am working on. I made a couple service classes with interfaces but every-time I try to navigate too these views they now crash. I setup my project to load ...
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18 views

Steps to add a xaml file into a VS2010 project

I am new to MVVM therefore I understand this is a beginner question but I have not found the answer so far. But in the View project of a MVVM style, what are the steps to add a XAML file to the ...
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35 views

Binding to “global” ViewModel

I would like to have a an object that is seen from multiple views. Each view has a Viewmodel. Is it possible to have a "global" viewmodel with and object that I cand binding from all views of the ...
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25 views

Binding datagrid in datagrid

Why i cant bind datagrid property selected item ? i have property in my ViewModel protected TheFile curentFile ; public TheFile CurentFile { get { return curentFile; } set ...
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WPF ComboBox: Wrong Item is displayed

This is the initial situation: XAML: <ComboBox Grid.Row="0" Grid.Column="1" Margin="0,3" HorizontalAlignment="Stretch" DisplayMemberPath="DisplayText" ...
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2answers
35 views

MVVM: Make Binding update ViewModel only when data is VALID

I have a ViewModel that implements the IDataErrorInfo interface. It just has a property: MyNumber. In my view have a TextBox in which the user can type any number, but only numbers from 0 to 9 are ...
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MVVM sharing code Win8 and WP8 and file access

I am working on small project, where I would like to learn about code sharing methods. This solution include both Win8 and WP8 projects. I need to load data from XML files which are stored in the ...
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37 views

WPF datagrid show data of all columns in one row

In datagrid I want to show list which is grouped, there is a style for datagrid row to show expander which shows basic information and then user has to expand to see more data (in terms of another ...
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What is the real purpose of ViewModel in MVVM?

I had a talk with teamlead about this topic and from his point of view we can just use bindings and commandings omitting ViewModel, because we can test UI behaviour without VM using Automation or our ...
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50 views

Add programmaticly UIElement to the View in a asynchromous way

It's been few days now that I'm stick in the same problem so I finally comes up to ask the community. I will try to make it as clear as possible. I'm actually trying to add in a asynchronous way ...
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7 views

MVVMLight Message Bus single sync/async

The MVVMLight for the Silverlight application has a Message Bus. The View Models can send messages between each other so all of them can be decoupled. My question is, is Sending message an sync or ...
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9 views

Catel MVVM EventToCommand for WinRT

I am developing Windows store App using catel mvvm but couldn't find EventToCommand functionality for WinRT. Does anyone has any idea where can I find it?
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1answer
45 views

MVVM Treeview Click Node

I am using an existed MVVM project and I did fine until now. I have a treeView code and I want to release the node when it pressed. in other words, today if I click on any node, Its not selectable ...
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How to store Windows Live ID User Information from LiveAuthenticate?

I'm trying to create a windows 8 desktop app which uses the Live Authenticate ability so that users can login with their Live ID. I set up the Live Authenticate in a separate Class using this code: ...
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Close child window from parent viewmodel wpf mvvm

Close child window after clicking ok/cancel. I am invoking the child window from parent mvm model //parent view model var optionSetViewModel = new OptionSetViewModel(); var ...
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36 views

EF5 SaveChanges with MVVM

I'm writing a first MVVM application in WPF using EF5 with a "Database First" approach. My model in the MVVM is what EF5 has generated for me (I did need to customize the T4 template to include ...
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40 views

Data is not displayed on the View

I have made a wpf application for implementing the MVVM architecture. I can see the forma but the data is not loaded in the form please help is needed. I am using Visual studio 2012. Below is the ...
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'System.InvalidOperationException' occurred in Microsoft.Practices.Prism.dll, while navigate to request

I get 'System.InvalidOperationException' occurred in Microsoft.Practices.Prism.dll while i perform request to navigate. I navigate to a popup region. as first time when i invoke the command, view is ...
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20 views

Lightbox in WPF with dynamic image source

Currently I am working on wpf application. I need Lightbox effect. I referred this link - c-wpf-display-images-like-a-lightbox-in-jquery and implemented in my project but it works only for static ...
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1answer
54 views

How to defer the resolving of classes?

This is my scenario: I have an application like this: I Use Ninject as my DI Container and I am working with WPF 1-There is ClassB which is injected into ClassA Which is Injected into ...
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47 views

How to bind Windows Form Control to a “Grid” Panel using MVVM in WPF

I am attempting to use MVVM to Bind a Windows Form Control to a panel in WPF. My overall objective is to be able to dynamically change which specific Windows Form Control I will use as I plan on ...

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