點擊事件的話直接綁定command

xaml里引用xmlns:i="clr-namespace:System.Windows.Interactivity;assembly=System.Windows.Interactivity"

<i:Interaction.Triggers>
<i:EventTrigger EventName="Click">
<i:InvokeCommandAction Command="{Binding Command1}" CommandParameter="10" />
</i:EventTrigger>

</i:Interaction.Triggers>

Command1在vm層定義