需求:打开WPF项目后,展示3秒钟产品Logo后,进入主界面MainWindow。(类似于安卓应用打开时的闪屏页SplashPage)
思路:在进入MainWindow后新建一个Window窗体,窗体的背景设置为Logo图片,窗体设置为最大化、Z轴置顶、不可调整宽高、不显示状态栏。设置一个DispatcherTimer定时器,3秒后关闭窗体。
MainWindow.xaml.cs 后台代码的主要逻辑:
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();
}
配置文件App.config 添加内容
<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>
重要参考:
http://*.com/questions/11719283/how-to-close-auto-hide-wpf-window-after-10-sec-using-timer