wpf利用线程制作初始界面和关闭窗体特效

1.首先定义初始窗体，和主窗体。

　　初始窗体（StartWindow）　主窗体(MainWindow)：

2.在主窗体界面中，加载初始窗体。注意在线程中操作UI元素需要使用BeginInvoke或者Invoke方法。

　　

        StartWindow start;
        public MainWindow()
        {
            InitializeComponent();
            Thread thread = new Thread(LoadResource);
            thread.Start();
            this.Visibility = Visibility.Hidden;
            start = new StartWindow();
            start.closeTheWindows += start_closeTheWindows;
            start.Show();
        }

        /// <summary>
        /// 窗体start关闭之后执行
        /// </summary>
        private void start_closeTheWindows()
        {
            this.Visibility = Visibility.Visible;
        }

        /// <summary>
        /// 执行加载资源等操作
        /// </summary>
        /// <param name="obj"></param>
        private void LoadResource(object obj)
        {
            Thread.Sleep(3000);
            this.Dispatcher.BeginInvoke(DispatcherPriority.Normal, (ThreadStart)delegate()
            {
                start.Close();
            });
        }

3.在startWindow中用到窗体关闭特效，定义了委托，在关闭之后显示主窗体。

　

        /// <summary>
        /// 重写OnCloseIng，关闭特效
        /// </summary>
        bool _closinganimation = true;
        protected override void OnClosing(System.ComponentModel.CancelEventArgs e)
        {
            e.Cancel = _closinganimation;
            _closinganimation = false;
            base.OnClosing(e);

            System.Windows.Media.Animation.Storyboard sb = new System.Windows.Media.Animation.Storyboard();
            System.Windows.Media.Animation.DoubleAnimation dh = new System.Windows.Media.Animation.DoubleAnimation();
            System.Windows.Media.Animation.DoubleAnimation dw = new System.Windows.Media.Animation.DoubleAnimation();
            System.Windows.Media.Animation.DoubleAnimation dop = new System.Windows.Media.Animation.DoubleAnimation();
            dop.Duration = dh.Duration = dw.Duration = sb.Duration = new Duration(new TimeSpan(0, 0, 2));
            dop.To = dh.To = dw.To = 0;
            System.Windows.Media.Animation.Storyboard.SetTarget(dop, this);
            System.Windows.Media.Animation.Storyboard.SetTarget(dh, this);
            System.Windows.Media.Animation.Storyboard.SetTarget(dw, this);
            System.Windows.Media.Animation.Storyboard.SetTargetProperty(dop, new PropertyPath("Opacity", new object[] { }));
            System.Windows.Media.Animation.Storyboard.SetTargetProperty(dh, new PropertyPath("Height", new object[] { }));
            System.Windows.Media.Animation.Storyboard.SetTargetProperty(dw, new PropertyPath("Width", new object[] { }));
            sb.Children.Add(dh);
            sb.Children.Add(dw);
            sb.Children.Add(dop);

            sb.Completed += (a, b) => { this.Close(); };
            sb.Begin();
        }

　

        /// <summary>
        /// 关闭子窗体委托
        /// </summary>
        public delegate void CloseThis();
        public StartWindow()
        {
            InitializeComponent();
        }

        public event CloseThis closeTheWindows;
        private void Window_Closed(object sender, EventArgs e)
        {
            closeTheWindows();
        }

关闭代码下载与CSDN资源：http://download.csdn.net/detail/daixin1031017817/5501187