MVVMLIGHT：MouseDoubleClick不起作用

Question

我有一个带有EventTrigger MouseDoubleClick的列表框。

此不起作用：EventName =＆＃34; MouseDoubleClick＆＃34;

有效：EventName =＆＃34; MouseLeftButtonUp＆＃34;

这是视图

 <ListBox x:Name="MyListBox" />
        <i:Interaction.Triggers>
        <i:EventTrigger EventName="MouseDoubleClick">
        <command:EventToCommand Command="{Binding UserSelectionCommand}"
                                 CommandParameter="{Binding  SelectedItem, ElementName=MyListBox}"
                                                 />
         </i:EventTrigger>
        </i:Interaction.Triggers>

在ViewModel中

public RelayCommand<string> UserSelectionCommand
{get; private set;}

UserSelectionCommand = new RelayCommand<string>(ShowSelectedItem);

private void ShowSelectedItem(string selectedData)
{ .. }

Answer 1

结束ListBox应该在Interaction.Triggers之后，而不是之前。

<ListBox> 
 <Interaction.Triggers>
 ..
<Interaction.Triggers>
</ListBox>