WPF交互触发一个Style来调用视图模型上的命令[重复]

<interactivity:Interaction.Triggers>
     <interactivity:EventTrigger EventName=\"MouseDoubleClick\">
          <behaviours:ExecuteCommandAction Command=\"{Binding Path=DataContext.YourCommand, RelativeSource={RelativeSource FindAncestor,AncestorType={x:Type UserControl}}}\" 
               CommandParameter=\"{Binding }\"/>
     </interactivity:EventTrigger>
</interactivity:Interaction.Triggers>

<TextBox x:Name=\"EditableControlTextBox\" Loaded=\"RoomTextBox_Loaded\">
         <interactivity:Interaction.Triggers>
              <interactivity:EventTrigger EventName=\"LostFocus\">
                     <!--<cmd:EventToCommand Command=\"{Binding MyCommand}\" />-->
              </interactivity:EventTrigger>
          </interactivity:Interaction.Triggers>
</TextBox>