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Questions tagged [eventtocommand]

61 questions
37
votes
3 answers

MVVM Light: Adding EventToCommand in XAML without Blend, easier way or snippet?

Can anyone tell me what the actual syntax is for EventToCommand class. From what I believe is that EventToCommand class works with Silverlight / WPF and WP7, hence I think its a better choice to go down. From what I believe, I can add any click…
Martin
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30
votes
2 answers

When to use events over commands in WPF?

Hi i have recently looked into WPF and started learning about Events and Commands. I typically use Commands on Button clicks which causes a method to Run in my "view model". Is it possible to make the Button react to any other events like the…
CAA
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9
votes
1 answer

MVVM-Light => Pass Command Parameter AND EventArgs to Command

Using MVVM-Light Toolkit in Silverlight 5, i am trying to find a way to pass Command Parameters AND EventArgs both to ViewModel in an Event-To-Command behavior. I did find a post suggesting Passing EventArgs as Command Parameters but in my case i…
Thr3e
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8
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1 answer

MvvmLight EventToCommand on a TreeView throwing NullReferenceException

First, the code:
Josh Smeaton
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7
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0 answers

EventToCommand for Loaded event not working as expected if Window.SizeToContent = WidthAndHeight

I find out that the EventToCommand for the Loaded-event is not working as expected if the Window.SizeToContent attribute is set to WidthAndHeight. The Loaded-event seems to be fired correctly, but the EventToCommand.Command property is bound AFTER…
Sebastian
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7
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2 answers

Attaching Command to ScrollViewer.ScrollChanged of ListView

The WPF ListView class can be set up to automatically handle scrolling without an external ScrollViewer and it's possible to register an event handler for the control's internal scrollbar by writing XAML like such:
ISens
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5
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3 answers

Windows Phone 8.1 - MVVMLight - Why is EventToCommad not working?

I am not able to use EventToCommand in my Windows Phone 8.1…
DominikP
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4
votes
1 answer

EventToCommand with attached event

I use on attached event Validation.Error of the TextBox. Validation.Error I want to bind it to EventToCommand. Normally it does not work:
Hodaya Shalom
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4
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1 answer

Binding CommandParameter on ItemsControl Tap event

I'm using an ItemsControl, and I want to identify which item was selected on the Tap command. My xaml is defined here: …
earthling
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3
votes
1 answer

.Net Maui EventToCommand for unfocus event for Entry throws System.InvalidCastException

Am building a new App in .Net Maui using VS 2022 Preview. I am using CommunityToolkit.Mvvm I have an entry field. When this field loses focus, I want to trigger a command. My xaml is :
MethodToChaos
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3
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1 answer

Pass event argument to command with Microsoft.Toolkit.Mvvm and Microsoft.Xaml.Behaviors.Wpf

I try to implement the MVVM pattern for this sample (just simple paging part) with Microsoft.Toolkit.Mvvm unfortunately, I failed :( because I'm so noob in WPF also MVVM :)) the primary problem is how can I pass an argument of an event to command…
threefx
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3
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1 answer

Is there a way to use the EventToCommand of the MVVMLight in the Microsoft.Xaml.Behaviors.Wpf?

I have used System.Windows.Interactivity.WPF library with MVVM Light. I deleted System.Windows.Interactivity.WPF library because it's publishing date is old. And I installed Microsoft.Xaml.Behaviors.Wpf library and updated related to content. The…
jjw
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3
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0 answers

Xamarin Forms - EventToCommanBehavior do not bind command

I attempted to use EventToCommandBehavior like in below…
Piotr Kwiatkowski
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3
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1 answer

EventToCommand missing on MVVM Light

This helpful class seems to be gone from the latest MVVM Light build, any idea why or how to work around it? I'm using MvvmLightLibs.5.0.1.0, was definitely there on MvvmLightLibs.4.1.27.0. So this question is not related with one EventToCommand…
D.Rosado
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