WPF实现时钟特效

{ using System.Threading;

using System.Windows.Threading; /// <summary>

/// MainWindow.xaml 的交互逻辑 /// </summary>

public partial class MainWindow : Window {

//计时器 System.Timers.Timer timer = new System.Timers.Timer(1000);

public MainWindow() {

InitializeComponent(); #region 初始化时间

secondPointer.Angle = DateTime.Now.Second * 6; minutePointer.Angle = DateTime.Now.Minute * 6;

hourPointer.Angle = (DateTime.Now.Hour * 30) + (DateTime.Now.Minute * 0.5); this.labTime.Content = DateTime.Now.ToString("HH:mm:ss");

#endregion timer.Elapsed += new System.Timers.ElapsedEventHandler(timer_Elapsed);

timer.Enabled = true; }

private void Grid_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)

{ //进行拖放移动

this.DragMove(); }

private void timer_Elapsed(object sender, System.Timers.ElapsedEventArgs e) {

//UI异步更新 this.Dispatcher.Invoke(DispatcherPriority.Normal, (Action)(() =>

{ //秒针转动,秒针绕一圈360度，共60秒，所以1秒转动6度

secondPointer.Angle = DateTime.Now.Second * 6; //分针转动,分针绕一圈360度，共60分，所以1分转动6度

minutePointer.Angle = DateTime.Now.Minute * 6; //时针转动,时针绕一圈360度，共12时，所以1时转动30度。

//另外同一个小时内，随着分钟数的变化(绕一圈60分钟），时针也在缓慢变化（转动30度，30/60=0.5) hourPointer.Angle = (DateTime.Now.Hour * 30)+ (DateTime.Now.Minute * 0.5);

//更新时间值 this.labTime.Content = DateTime.Now.ToString("HH:mm:ss");

})); }

}