wpf listbox实现选中动画

效果如下：

参考：https://github.com/WPFDevelopersOrg/WPFDevelopers/blob/master/src/WPFDevelopers.Samples.Shared/Controls/NavigateMenu/NavigateMenu.xaml

实现上述效果的前台代码：

    
        
            
        
        
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后台代码：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
namespace ListBox
{
    /// 
    /// MainWindow.xaml 的交互逻辑
    /// 
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
            this.listbox.SelectionChanged += Listbox_SelectionChanged;
        }
        private double? lastX = null;
        private double? lastY = null;
        private void Listbox_SelectionChanged(object sender, SelectionChangedEventArgs e)
        {
            var itemTo = e.AddedItems[0] as ListBoxItem;
            var pointTo = itemTo.TranslatePoint(new Point(0, 0), this);
 
            var toMargin = new Thickness(pointTo.X, pointTo.Y, 0, 0);
            ThicknessAnimation ani = new ThicknessAnimation();
            ani.To = toMargin;
            ani.Duration = TimeSpan.FromSeconds(0.3);
            this.rect.BeginAnimation(Rectangle.MarginProperty, ani);
            ani.Completed += (ss, ee) =>
            {
                this.rect.Margin = toMargin;
            };
        }
    }
}

同理，依据此，可以实现TabControl的TabItem选中动画