ListView：在MouseEnter上檢索行值

Question

我想在MouseEnter事件中檢索ListViewa中的行單元格的值。 ListView項目是使用Binding生成的。

如何在不檢查SelectedItem的情況下做到這一點？

更新

XAML

<StackPanel> 
    <ListView x:Name="listView" MouseEnter="listView_MouseEnter"> 
     <ListView.View> 
      <GridView> 
       <GridViewColumn Header="Items"/> 
      </GridView> 
     </ListView.View> 
    </ListView> 
    <StatusBar VerticalAlignment="Center"> 
     <StatusBarItem>The value is:</StatusBarItem> 
     <StatusBarItem x:Name="retrievedText" /> 
    </StatusBar> 
</StackPanel> 

CS

public MainWindow() 
    { 
     InitializeComponent(); 

     int[] itemSource = { 1, 12, 3, 44, 12, 45, 6, 8, 9 }; 

     listView.ItemsSource = itemSource; 
    } 


    private void listView_MouseEnter(object sender, MouseEventArgs e) 
    { 
     string hoveredItem = null; //This will be the retrieved value 

     retrievedText.Content = hoveredItem; 
    } 

Answer 1

我們可以覆蓋ItemContainerStyle給項目一個機會來處理事件：

XAML：

個

<ListBox> 
    <ListBox.ItemContainerStyle> 
     <Style TargetType="{x:Type ListBoxItem}" BasedOn="{StaticResource {x:Type ListBoxItem} }"> 
      <EventSetter Event="MouseEnter" Handler="ListBoxItem_MouseEnter" /> 
     </Style> 
    </ListBox.ItemContainerStyle> 
</ListBox> 

CS：

private void ListBoxItem_MouseEnter(object s, MouseEventArgs e) 
{ 
    var item = e.OriginalSource as ListBoxItem; 

    // depends on what we have put in the content. e.g. string. 
    var content = item.Content as string; 
} 

你的情況：

XAML：

<StackPanel> 
    <ListView x:Name="listView"> 
     <ListView.ItemContainerStyle> 
      <Style TargetType="{x:Type ListBoxItem}" BasedOn="{StaticResource {x:Type ListBoxItem}}"> 
       <EventSetter Event="MouseEnter" Handler="ListBoxItem_MouseEnter" /> 
      </Style> 
     </ListView.ItemContainerStyle> 
     <ListView.View> 
      <GridView> 
       <GridViewColumn Header="Items"/> 
      </GridView> 
     </ListView.View> 
    </ListView> 
    <StatusBar VerticalAlignment="Center"> 
     <StatusBarItem>The value is:</StatusBarItem> 
     <StatusBarItem x:Name="retrievedText" /> 
    </StatusBar> 
</StackPanel> 

CS：

private void ListBoxItem_MouseEnter(object s, MouseEventArgs e) 
{ 
    var item = e.OriginalSource as ListBoxItem; 
    retrievedText.Content = item.Content; 
}