通过 InvokeCommandAction 调用 ViewModel 中的命令

<ListBox Grid.Row="1" Margin="5" ItemsSource="{Binding Items}" SelectionMode="Single">
    <i:Interaction.Triggers>
        <!-- This event trigger will execute the action when the corresponding event is raised by the ListBox. -->
        <i:EventTrigger EventName="SelectionChanged">
            <!-- This action will invoke the selected command in the view model and pass the parameters of the event to it. -->
            <prism:InvokeCommandAction Command="{Binding SelectedCommand}" TriggerParameterPath="AddedItems" />
        </i:EventTrigger>
    </i:Interaction.Triggers>

public DelegateCommand<object[]> SelectedCommand { get; private set; } = new DelegateCommand<object[]>(OnItemSelected);

private void OnItemSelected(object[] selectedItems)
{
    if (selectedItems != null && selectedItems.Count() > 0)
    {
        SelectedItemText = selectedItems.FirstOrDefault().ToString();
    }
}

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