[C # / WPF] The window will be closed automatically

Original: [C # / WPF] The window is closed automatically

Requirements: After opening the WPF project, after displaying the product logo for 3 seconds, enter the main window MainWindow. (Similar to SplashPage when the Android app is opened)

Idea: After entering MainWindow, create a new Window form, the background of the form is set to Logo picture, the form is set to maximize, Z axis is set to the top, the width and height cannot be adjusted, and the status bar is not displayed. Set a DispatcherTimer timer, close the window after 3 seconds.

Main logic of MainWindow.xaml.cs background code:

private Window window;

public MainWindow()
{
    InitializeComponent();
    // 界面加载完成后触发的事件
    this.Loaded += new RoutedEventHandler(ShowLoginWindow);
}

private void ShowLoginWindow(object sender, RoutedEventArgs e)
{
    // 弹窗显示Logo 3秒后关闭该弹窗自动关闭
    window = new Window();

    // 经测试，以下设置无法做到窗体跟屏幕一样大，窗体四周会留下几个像素的边距
    //double screenHeight = SystemParameters.FullPrimaryScreenHeight;
    //double screenWidth = SystemParameters.FullPrimaryScreenWidth;
    //window.Width = screenWidth;
    //window.Height = screenHeight;
    //window.Top = (screenHeight - window.Height) / 2;
    //window.Left = (screenWidth - window.Width) / 2;

    window.Topmost = true; // 置顶
    window.WindowStartupLocation = WindowStartupLocation.CenterScreen; // 屏幕中心
    window.WindowState = WindowState.Maximized; // 最大化
    window.ResizeMode = ResizeMode.NoResize; // 不能调宽高
    window.WindowStyle = WindowStyle.None;   // 无窗体样式，即可不显示状态栏

    // 背景是Logo图片
    ImageBrush brush = new ImageBrush();
    brush.ImageSource = new BitmapImage(new Uri("pack://application:,,,/HomeDecorationPSD;component/Presentation/Resources/Images/app_logo.jpg")); // 这是绝对路径
    window.Background = brush;

    // 设置窗体3秒后自动关闭
    StartCloseTimer();

    window.ShowDialog();
}

private void StartCloseTimer()
{
    DispatcherTimer timer = new DispatcherTimer();
    //timer.Interval = TimeSpan.FromSeconds(3); // 3秒
    // 为了方便测试，可以把这个秒数写到App.config配置文件中
    double t = double.Parse(ConfigurationManager.AppSettings["LOGO_WINDOW_AUTO_CLOSE_TIMER"]);
    timer.Tick += TimerTick; // 注册计时器到点后触发的回调
    timer.Start();
}

private void TimerTick(object sender, EventArgs e)
{
    DispatcherTimer timer = (DispatcherTimer)sender;
    timer.Stop();
    timer.Tick -= TimerTick; // 取消注册
    window.Close();
}

private void CloseLogoWindow(object state)
{
    // 关闭Logo窗体
    window.Close();
}

Configuration file App.config add content

<appSettings>
    ...
    <!-- 打开软件时Logo弹窗自动关闭倒计时秒数 类似闪屏页SplashPage -->
    <add key="LOGO_WINDOW_AUTO_CLOSE_TIMER" value="3" />
</appSettings>

Important reference:

http://stackoverflow.com/questions/11719283/how-to-close-auto-hide-wpf-window-after-10-sec-using-timer

[C # / WPF] The window will be closed automatically

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