ListView控件项动画效果添加

在WPF中，为ListView控件项添加动画效果，可以使用Storyboard和Trigger。以下是一个简单的示例，展示了如何为ListView控件项的标题添加淡入淡出动画效果。

首先，在XAML中添加ListView控件：

<Window x:Class="ListViewAnimationExample.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:local="clr-namespace:ListViewAnimationExample"
        mc:Ignorable="d"
        Title="ListView Animation Example" Height="200" Width="300">
    <Grid>
        <ListView x:Name="listView" HorizontalAlignment="Left" Height="160" Margin="10,10,0,0" VerticalAlignment="Top" Width="260">
            <ListView.ItemTemplate>
                <DataTemplate>
                    <StackPanel Orientation="Horizontal">
                        <TextBlock x:Name="title" Text="{Binding Title}" FontWeight="Bold" />
                        <Button Content="Delete" Click="DeleteButton_Click" Margin="5,0,0,0" />
                    </StackPanel>
                </DataTemplate>
            </ListView.ItemTemplate>
        </ListView>
    </Grid>
</Window>

接下来，在MainWindow.xaml.cs中添加数据模型和初始化代码：

using System.Windows;
using System.Windows.Controls;
using System.Windows.Media.Animation;

namespace ListViewAnimationExample
{
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();

            // 初始化数据
            var items = new[]
            {
                new Item { Title = "Item 1" },
                new Item { Title = "Item 2" },
                new Item { Title = "Item 3" },
            };

            listView.ItemsSource = items;
        }

        private void DeleteButton_Click(object sender, RoutedEventArgs e)
        {
            var button = sender as Button;
            if (button?.CommandParameter is Item item)
            {
                listView.Items.Remove(item);
            }
        }
    }

    public class Item
    {
        public string Title { get; set; }
    }
}

最后，在MainWindow.xaml中添加动画代码：

<Window.Resources>
    <Style TargetType="{x:Type ListViewItem}">
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="{x:Type ListViewItem}">
                    <Grid>
                        <Border x:Name="border" Background="{TemplateBinding Background}" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Padding="{TemplateBinding Padding}">
                            <ContentPresenter x:Name="contentPresenter" HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" VerticalAlignment="{TemplateBinding VerticalContentAlignment}" Content="{TemplateBinding Content}" ContentTemplate="{TemplateBinding ContentTemplate}" ContentStringFormat="{TemplateBinding ContentStringFormat}" />
                        </Border>
                        <VisualState x:Name="Normal">
                            <Storyboard>
                                <DoubleAnimation Storyboard.TargetName="title" BeginTime="0:0:0" Duration="0:0:0.5" From="0" To="1" AutoReverse="False" />
                            </Storyboard>
                        </VisualState>
                        <VisualState x:Name="MouseOver">
                            <Storyboard>
                                <DoubleAnimation Storyboard.TargetName="title" BeginTime="0:0:0" Duration="0:0:0.5" From="0" To="1" AutoReverse="False" />
                            </Storyboard>
                        </VisualState>
                        <VisualState x:Name="Selected">
                            <Storyboard>
                                <DoubleAnimation Storyboard.TargetName="title" BeginTime="0:0:0" Duration="0:0:0.5" From="0" To="1" AutoReverse="False" />
                            </Storyboard>
                        </VisualState>
                        <VisualState x:Name="Inactive">
                            <Storyboard>
                                <DoubleAnimation Storyboard.TargetName="title" BeginTime="0:0:0" Duration="0:0:0.5" From="1" To="0" AutoReverse="True" />
                            </Storyboard>
                        </VisualState>
                    </Grid>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>
</Window.Resources>

这个示例中，我们为ListViewItem定义了一个模板，并在其中添加了一个名为title的TextBlock。然后，我们为title元素创建了一个淡入淡出动画，当鼠标悬停在ListView项上时，动画效果会触发。