?<ListView???x:Name="TrackListView"? MouseDoubleClick="MouseDoubleClick"
????????????????? SelectionChanged="SelectionChanged" >

ListView中的MouseDoubleClick雙擊時不觸發(fā)SelectionChanged的選中事件，獲取不到當(dāng)前雙擊的Item，即this.TrackListView.SelectedItem中的數(shù)據(jù)對象為null。

protected void MouseDoubleClick(object sender, MouseButtonEventArgs e)
{
????? var item = this.TrackListView.SelectedItem as Track;//is null

???? //this.TrackListView.SelectedItem is null
}

如果雙擊時剛好觸發(fā)了SelectionChanged事件，那么當(dāng)前l(fā)istView中的selectItem是有數(shù)據(jù)的，那怎么解決不觸發(fā)時而又想獲取到當(dāng)前雙擊Item數(shù)據(jù)對象呢，方法如下:

?

<UserControl.Resources>
??? <Style x:Key="itemstyle" TargetType="{x:Type ListViewItem}">
??????? <EventSetter Event="MouseDoubleClick" Handler="HandleDoubleClick" />
??? </Style>
</UserControl.Resources>

<ListView Name="TrackListView" ItemContainerStyle="{StaticResource itemstyle}">
??? <ListView.View>
??????? <GridView>
??????????? <GridViewColumn Header="Title" Width="100" HeaderTemplate="{StaticResource BlueHeader}" DisplayMemberBinding="{Binding Name}"/>
??????????? <GridViewColumn Header="Artist" Width="100" HeaderTemplate="{StaticResource BlueHeader}" DisplayMemberBinding="{Binding Album.Artist.Name}" />
??????? </GridView>
??? </ListView.View>
</ListView>

?

protected void HandleDoubleClick(object sender, MouseButtonEventArgs e)
{
??? var track = ((ListViewItem) sender).Content as Track; //Casting back to the binded Track
}

轉(zhuǎn)載于:https://www.cnblogs.com/ligl/p/5629802.html

總結(jié)

以上是生活随笔為你收集整理的WPF ListView DoubleClick的全部內(nèi)容，希望文章能夠幫你解決所遇到的問題。

如果覺得生活随笔網(wǎng)站內(nèi)容還不錯，歡迎將生活随笔推薦給好友。