RadContextMenu CommandParamenter doesnt 'work

[Daniele]

Hi,
I'm using the RadDataBoundListBox with a RadContextMenu inside.
I would like to pass the item ,to my viewmodel, of the list box where I opened the menu.
The command is fired but the paramenter is always null.
I also read others thread but I didn't find any solution.

This is my xaml code:
<telerikPrimitives:RadDataBoundListBox x:Name="myLista" ItemContainerStyle="{StaticResource ItemContainerStyle}" ItemTemplate="{StaticResource ListBoxNewItemTemplate}" ItemsSource="{Binding ListaItems}">
<telerikPrimitives:RadContextMenu.ContextMenu>
<telerikPrimitives:RadContextMenu>
                                <telerikPrimitives:RadContextMenuItem Content="Modifica" Command="{Binding Modifica}" CommandParameter="{Binding}"/>
                                 <telerikPrimitives:RadContextMenuItem Content="Rimuovi" Command="{Binding Rimuovi}" CommandParameter="{Binding}"/>
                            </telerikPrimitives:RadContextMenu>
</telerikPrimitives:RadContextMenu.ContextMenu>

<i:Interaction.Triggers>
<i:EventTrigger EventName="ItemTap">
<command:EventToCommand Command="{Binding ItemClick}"
CommandParameter="{Binding SelectedItem, ElementName=myLista}"/>
</i:EventTrigger>
</i:Interaction.Triggers>
</telerikPrimitives:RadDataBoundListBox>


This is my viewmodel code:

private RelayCommand<MyViewModel> _modifica;
public RelayCommand<MyViewModel> Modifica
        {
get
{
return _modifica
                    ?? (_modifica = new RelayCommand<MyViewModel>(
item =>
{
if (item != null)
{
                                ...do something
                            }

}
));
}
}

[Ves]

Hi Daniele,

All you need to do in this case is remove the CommandParameter attribute from the RadContextMenuItem definition:

<telerikPrimitives:RadContextMenuItem Content="Modifica" Command="{Binding Modifica}" CommandParameter="{Binding}"/>

The integration is provided out of the box and if no CommandParameter is set, the corresponding RadDataBoundListBoxItem is sent as command parameter. You can find a similar example in our examples solution -- its default installation folder looks like this:
C:\Program Files (x86)\Telerik\UI for Windows Phone 8 Q1 2015\Examples
Look for ContextMenu's FirstLook example in the examples.WindowsPhone\ContextMenu folder.

Best regards,
Ves
Telerik