Questions tagged [relaycommand]

RelayCommand is an implementation of the .NET ICommand interface made and described by WPF expert Josh Smith.

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Pass SynchronizationContext to ViewModel when it's in a different projects

I have WPF application implemented with classic MVVM pattern, however View, Model and ViewModel are three different projects in my solution. I have well-known implementation of AsyncObservebleCollection in my ViewModel public class MyVM :…
inside
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Cannot convert lambda expression to type 'string' because it is not a delegate type RelayCommand Model

the following is my code and I did include both System.Linq and also System.Data, and I still get this error: Cannot convert lambda expression to type 'string' because it is not a delegate type RelayCommand Model I've searched all over the…
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Send a FlipViewItem as a RelayCommandParameter in a Windows Store App

I am trying to send to a view model the current item of a FlipView control, using MVVM Light. The XAML code representing the FlipView control is the following:
rhcpfan
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Can you give the button content as a parameter with a RelayCommand?

I have a method that changes the color of some textblocks, can you give the content as a parameter (string) with a RelayCommand?
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Reuse controls inside a usercontrol

I have a UserControl UserControl1 and a button inside the UserControl1. And I have a UserControl1ViewModel that has an ICommand property for the button. Using this command I need to call a method outside(from other VMs or VM of the MainWindow) the…
Lance
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Multibinding Command Parameters

So I have a context menu for each individual listview item and the listview is bound to a user list. The context menu has a sub-menu that is bound to an observable collection of user statuses. I want to be able to pass the user id from the list…
JTester
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get the selected row of datagrid i.e on click in mvvm

i want to get the selected row of datagrid i.e on click in mvvm.i have below code i want to use it in MVVM,but not able to do so.Please let me know how to convert below 3 line s in mvvm using relay comand and Icommand DataRowView dataRow =…
user3386790
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SelectedItem set after Right Click event on DataGrid

I have a DataGrid as below
Prisoner
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RelayCommand not binding my object in the MainViewModel

Hello I'm new here and I'm trying to explain my problem in a good english because it's not my mother tongue :) So I'm using MVVM Light and I have my RelayCommand : private RelayCommand _SearchMethod; public RelayCommand SearchMethod { …
Debuzz89
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AppBarButton is not binding to MVVM Relay command in ListView

Hi I am trying to add AppBarButton in a ListView and binded command to RelayCommand in ViewModel here is my xaml code
Muhammad Saifullah
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RelayCommand implementation : Object reference not set to an instance of an object

I have a WPF Project and I am using a RelayCommand for button click event. Here is the constractor of my MainViewModel private readonly DataService _dataService; public MainWindowModel(DataService dataService) { _dataService =…
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Setting SelectedItem of combo box in MVVM

I have a combo box, selectionchanged event of combo box attached with its respective command and upon changing the selected item(from the drop down list) command is firing as expected but not when I set the selected item from the code. This is some…
Manvinder
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WPF - Pass parameter to relaycommand within ItemsControl

I've got an ItemsControl for basically an array of comboboxes, textboxes and buttons: The XAML for that bottom section is all within the ItemsControl: (Having a problem with the button, the last element)
odkken
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RelayCommand has some invalid arguments

I must not be understanding commands. I started by looking at this page http://www.codeproject.com/Articles/238657/How-to-use-Commands-in-WPF and for some reason, RelayCommand is saying that it has some invalid arguments, but I'm not sure why or…
user2013535
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Close window MVVM style

I'm programming an application in WPF which uses the MVVM concept. I'm trying to have no code-behind, and trying to keep my ViewModels and Views fully seperated. This means that I have to handle closing windows in xaml. I want to execute a…
Jonas Jensen
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