Intellisense doesn't work for MVVM light toolkit

Question

I began to use MVVM pattern yesterday.But for working with events i needed to install MVVM light toolkit.I did that,and added library to references.At UserControl i announced that library,but when i want to use toolkit whatever i write it doesnt show any suggestions and doesnt accept what i want to write and shows this error "A value of type 'EventToCommand' cannot be added to a collection or dictionary of type 'TriggerActionCollection' "

<EventTrigger RoutedEvent="TextChanged">
   <mvvm:EventToCommand Command="{Binding Test}"/>
</EventTrigger>

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Ankesh · Accepted Answer · 2011-11-23T09:16:25.470

4

You have to use it like this ..

Namespace to add :
xmlns:i="clr-namespace:System.Windows.Interactivity;assembly=System.Windows.Interactivity"

<i:Interaction.Triggers>
    <i:EventTrigger EventName="Loaded">
        <mvvm:EventToCommand Command="{Binding Path=UserControlLoadedCommand}" />
    </i:EventTrigger>
</i:Interaction.Triggers>

Dont forget to add a reference to System.Windows.Interactivity to your project

You need To Use PassEventArgsToCommand="True" in

<i:Interaction.Triggers>
    <i:EventTrigger EventName="Loaded">
        <mvvm:EventToCommand Command="{Binding Path=UserControlLoadedCommand}" PassEventArgsToCommand="True" />
    </i:EventTrigger>
</i:Interaction.Triggers>

And then you can get that at ViewModel ..... you Might Need to use Generic RelayCommand as

RelayCommand<KeyEventArgs> myCommand= new RelayCommand<KeyEventArgs>(Execute,CanExecute)

edited Nov 23 '11 at 09:16

answered Nov 15 '11 at 06:06

Ankesh

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now i tested it.but it is doesnt raise event(command) when it must rise.I couldnt understand what the problem – Javidan Guliyev Nov 22 '11 at 08:19
which dll you use?i use GalaSoft.MvvmLight.Extras.WPF4 – Javidan Guliyev Nov 23 '11 at 04:57
well,i could solve this,but there is another problem now.I bind preview key down event,because of that it must return keyEventArgs but it returns null – Javidan Guliyev Nov 23 '11 at 05:01
1

@JavidanGuliyev se Edited answer – Ankesh Nov 23 '11 at 09:13

Intellisense doesn't work for MVVM light toolkit

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