App_win_V1.0.0_xintang_V1.0.0/Container/Win/CountDown.xaml.cs

using Container.Common;
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.Shapes;

namespace Container.Win
{
    /// <summary>
    /// CountDown.xaml 的交互逻辑
    /// </summary>
    public partial class CountDown : Window
    {
        public CountDown()
        {
            InitializeComponent();
        }
        Class_Log log = new Class_Log();
        private void Window_Loaded(object sender, RoutedEventArgs e)
        {
            LoadPics();
        }

        private void LoadPics()
        {
            try
            {
                Storyboard _storyboard = new Storyboard();

                for (int i = 0; i < 220; i++)
                {
                    ObjectAnimationUsingKeyFrames oauf = new ObjectAnimationUsingKeyFrames();
                    //ObjectAnimationUsingKeyFrames 可以对指定 Duration 内的一组 KeyFrames 中的 Object 属性值进行动画处理
                    BitmapImage bitmap = new BitmapImage();
                    bitmap.BeginInit();
                    string name = i.ToString().PadLeft(5, '0');
                    bitmap.UriSource = new Uri("pack://application:,,,/Container;component/image/CountDowmImage/倒计时透明度_" + name + ".png");
                    bitmap.CacheOption = BitmapCacheOption.Default;
                    bitmap.EndInit();

                    ImageBrush imgBrush = new ImageBrush(bitmap);
                    //读取图片文件
                    DiscreteObjectKeyFrame dokf = new DiscreteObjectKeyFrame();
                    //DiscreteObjectKeyFrame 通过使用离散内插，可以在前一个关键帧的 Object 值及其自己的 Value 之间进行动画处理。
                    dokf.KeyTime = KeyTime.FromTimeSpan(TimeSpan.FromMilliseconds(i * 30));
                    //KeyTime 获取或设置应到达关键帧的目标 Value 的时间
                    //这里每隔40毫秒设置一张图片，也就是每秒1000/40=25帧
                    dokf.Value = imgBrush;
                    oauf.KeyFrames.Add(dokf);
                    Storyboard.SetTargetProperty(oauf, new PropertyPath("(Rectangle.Fill)"));
                    //把动画应用到窗体的Rectangle中
                    Storyboard.SetTarget(oauf, RectDisImage);
                    //RectDis是Rectangle的名称
                    _storyboard.Children.Add(oauf);
                    //把ObjectAnimationUsingKeyFrames动画添加到Storyboard中
                }
                _storyboard.Completed += new EventHandler(time_Completed);
                //_storyboard.RepeatBehavior = RepeatBehavior.Forever;
                _storyboard.Begin();

            }
            catch (Exception ex)
            {

                log.WriteLogFile(ex.Message, "error");
            }
        }

        void time_Completed(object sender, EventArgs e)
        {
            WindowViewNew window = new WindowViewNew();
            window.Show();
            this.Close();
        }
    }
}