Question

我有两个ListView，每个列表包含一些行。我想在行选择后调用函数。但我有一个问题，事件＆＃34; GotFocus＆＃34;选中行或单击此行中的按钮时触发。当我使用<i:EventTrigger EventName="Selected">时，当选择表中的行时，它不会触发。我需要做什么？

的Xaml：

<Grid>
    <ListView Width="200" Height="200" ItemsSource="{Binding Items}" HorizontalAlignment="Left">
        <ListView.ItemTemplate>
            <DataTemplate>
                <Button Content="{Binding .}">
                </Button>
            </DataTemplate>
        </ListView.ItemTemplate>
        <i:Interaction.Triggers>
            <i:EventTrigger EventName="GotFocus">
                <i:InvokeCommandAction Command="{Binding DataContext.TestCommand, RelativeSource={RelativeSource Mode=FindAncestor, AncestorType={x:Type vm:MainWindow }}}"></i:InvokeCommandAction>
            </i:EventTrigger>
        </i:Interaction.Triggers>
    </ListView>
    <ListBox Width="200" Height="200" ItemsSource="{Binding Items}" HorizontalAlignment="Right">
        <ListBox.ItemTemplate>
            <DataTemplate>
                <Button Content="{Binding .}">
                </Button>
            </DataTemplate>
        </ListBox.ItemTemplate>
        <i:Interaction.Triggers>
            <i:EventTrigger EventName="GotFocus">
                <i:InvokeCommandAction Command="{Binding DataContext.TestTestCommand, RelativeSource={RelativeSource Mode=FindAncestor, AncestorType={x:Type vm:MainWindow }}}"></i:InvokeCommandAction>
            </i:EventTrigger>
        </i:Interaction.Triggers>
    </ListBox>
</Grid>

代码：

namespace WpfApplication129
{
/// <summary>
/// Interaction logic for MainWindow.xaml
/// </summary>
public partial class MainWindow : Window
{

    public MainWindow()
    {
        DataContext = new Data();
        InitializeComponent();
    }
}
public class Data
{
    public ICommand TestCommand { get; set; }
    public ICommand TestTestCommand { get; set; }
    public List<string> Items { get; set; }
    public Data()
    {
        TestCommand = new RelayCommand(() => Test());
        TestTestCommand = new RelayCommand(() => TestTest());
        Items = new List<string>();
        Items.Add("first");
        Items.Add("Second");
        Items.Add("Third");
    }
    public void Test()
    {
        MessageBox.Show("Running");
    }
    public void TestTest()
    {
        MessageBox.Show("TestRunning");
    }
}
}

Answer 1

Selected中没有ListView个事件，您必须使用SelectionChanged个事件。

Wpf listview项目选择事件

1 个答案: