WPF中如何将ListViewItem双击事件绑定到Command

今天的博客将介绍如何实现ListViewItem双击事件绑定到ViewModel中的Command。实现方法借助了Style中的EventSetter，请看下面的详细代码：

<ListView ItemsSource="{Binding Users}">

    <ListView.ItemTemplate>

        <DataTemplate>

            <Grid>

                <Grid.ColumnDefinitions>

                    <ColumnDefinition Width="*" />

                    <ColumnDefinition Width="2*" />

                    <ColumnDefinition Width="3*" />

                </Grid.ColumnDefinitions>

                <TextBlock Text="{Binding Name}" VerticalAlignment="Center" HorizontalAlignment="Center" />

                <TextBlock Grid.Column="1" Text="{Binding Birthday}" VerticalAlignment="Center" HorizontalAlignment="Center" />

                <TextBlock Grid.Column="2" Text="{Binding Address}" VerticalAlignment="Center" HorizontalAlignment="Center" />

            </Grid>

        </DataTemplate>

    </ListView.ItemTemplate>

    <ListView.ItemContainerStyle>

        <Style TargetType="{x:Type ListViewItem}">

            <Style.Setters>

                <EventSetter Event="MouseDoubleClick" Handler="OnListViewItemDoubleClick" />

            </Style.Setters>

        </Style>

    </ListView.ItemContainerStyle>

</ListView>

在Code Behind中，

        private void OnListViewItemDoubleClick(object sender, MouseButtonEventArgs e)

        {

            var vm = this.DataContext as MainViewModel;

            vm.EditCommand.Execute();

        }

具体的ViewModel中执行需要的操作即可。这样不会打破MVVM模式。

    class MainViewModel

    {

        private ObservableCollection<User> _users;

        public ObservableCollection<User> Users

        {

            get

            {

                if(_users == null)

                {

                    _users = new ObservableCollection<User>();

                }

                return _users;

            }

        }

        public DelegateCommand EditCommand { get; private set; }

        public MainViewModel()

        {

            Users.Add(new User() { Name = "Tom", Address = "WUXI IPARK", Birthday = new DateTime(,,) });

            Users.Add(new User() { Name = "Jack", Address = "WUXI IPARK", Birthday = new DateTime(, , ) });

            Users.Add(new User() { Name = "Jerry", Address = "WUXI IPARK", Birthday = new DateTime(, , ) });

            Users.Add(new User() { Name = "Hellen", Address = "WUXI IPARK", Birthday = new DateTime(, , ) });

            EditCommand = new DelegateCommand(Edit);

        }

        private void Edit()

        {

            System.Diagnostics.Debug.WriteLine("MouseDoubleClick Command.");

        }

    }

通过上面的方式就很简单的将ListView中的MouseDoubleClick事件绑定到Command上。

感谢您的阅读，代码点击这里下载。