WPFListViewItem-切換可聚焦和IsMouseOver背景值

我正在嘗試顯示具有不同物件型別的串列（例如狗和貓）。型別應該在視覺上有所不同（在 MainWindow.xaml 中的 DataTemplate 中通過紅色和藍色字體實作的示例中）。

此外，我希望既不能選擇貓，也不能在 IsMouseOver 觸發器上獲得彩色背景。但是，我在后者方面沒有成功。我在 MainWindow.xaml 中留下了一些我的嘗試作為注釋。

主視窗.xaml

<Window.Resources>
    <local:AnimalToFocusConverter x:Key="AnimalToFocusConverter" />
    <local:AnimalToBackgroundColorConverter x:Key="AnimalToBackgroundColorConverter" />

    <DataTemplate DataType="{x:Type local:Dog}">
        <TextBlock Text="{Binding Path=Name}" Foreground="Red" />
    </DataTemplate>

    <DataTemplate DataType="{x:Type local:Cat}">
        <TextBlock Text="{Binding Path=Name}" Foreground="Blue" />
    </DataTemplate>
</Window.Resources>
<Grid>
    <ListView ItemsSource="{Binding AnimalCollection}">
        <ListView.ItemContainerStyle>
            <Style TargetType="ListViewItem">
                <Setter Property="Background" Value="Transparent" />
                <!--<Setter Property="Template">
                    <Setter.Value>
                        <ControlTemplate TargetType="{x:Type ListViewItem}">
                            <Grid Background="Transparent">
                                <ContentPresenter />
                            </Grid>
                        </ControlTemplate>
                    </Setter.Value>
                </Setter>
                <Style.Triggers>
                    <Trigger Property="IsMouseOver" Value="True">
                        <Setter Property="Background" Value="{Binding Converter={StaticResource AnimalToBackgroundColorConverter}}" />
                    </Trigger>
                </Style.Triggers>-->
            </Style>
        </ListView.ItemContainerStyle>
    </ListView>
</Grid>

動物.cs

public class Animals
{
    public ObservableCollection<IAnimal> AnimalCollection { get; set; } = new ObservableCollection<IAnimal>();

    public Animals()
    {
        AnimalCollection.Add(new Dog());
        AnimalCollection.Add(new Dog());
        AnimalCollection.Add(new Cat());
        AnimalCollection.Add(new Dog());
        AnimalCollection.Add(new Cat());
    }
}

IAnimal.cs

public interface IAnimal
{
}

狗.cs / Cat.cs

public class Dog : ObservableObject, IAnimal
{
    private static int counter = 0;
    public string Name { get; set; }

    public Dog()
    {
        Name = $"Dog{  counter}";
    }
}

轉換器.cs

[ValueConversion(typeof(IAnimal), typeof(bool))]
public class AnimalToFocusConverter : IValueConverter
{
    public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
    {
        return value switch
        {
            Dog => true,
            Cat => false,
            _ => false,
        };
    }

// ...

[ValueConversion(typeof(IAnimal), typeof(SolidColorBrush))]
public class AnimalToBackgroundColorConverter : IValueConverter
{
    public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
    {
        return value switch
        {
            Dog => new SolidColorBrush(Colors.LightBlue),
            Cat => new SolidColorBrush(Colors.Transparent),
            _ => new SolidColorBrush(Colors.LightBlue),
        };
    }

uj5u.com熱心網友回復：

您可以將物件的容器IsHitTestVisible屬性設定為：ListViewItemCatfalse

<ListView ItemsSource="{Binding AnimalCollection}">
    <ListView.ItemContainerStyle>
        <Style TargetType="ListViewItem">
            <Setter Property="Background" Value="Transparent" />
            <Setter Property="IsHitTestVisible"
                    Value="{Binding Converter={StaticResource AnimalToFocusConverter}}" />
        </Style>
    </ListView.ItemContainerStyle>
</ListView>

標籤：C＃ wpf 虚拟机

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