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   源码介绍

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仿QQ展开收缩效果

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
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.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;

namespace ShrinkSpread
{
    /// <summary>
    /// MainWindow.xaml 的交互逻辑
    /// </summary>
    public partial class MainWindow : Window
    {
        System.Windows.Media.Animation.Storyboard sb = null;
        public MainWindow()
        {
            InitializeComponent();
            sb = (System.Windows.Media.Animation.Storyboard)layoutroot.Resources["spread"];
            sb.Completed  = (s, e) =>
            {
                sb = (System.Windows.Media.Animation.Storyboard)layoutroot.Resources["shrink"];
                sb.Completed  = (sender, Event) => Application.Current.Shutdown();
            };
            if (sb != null)
            {
                sb.Begin();
            }
        }

        private void OnClick(object sender, RoutedEventArgs e)
        {
            if (sb != null)
            {
                sb.Begin();
            }
        }
    }
}