如何为WPF创建计时器

<Window x:Class="YourNamespace.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="Your Application" Height="450" Width="800">
    <Grid>
        <!-- Your UI elements here -->
    </Grid>
</Window>

using System.Windows;
using System.Windows.Threading;

namespace YourNamespace
{
    public partial class MainWindow : Window
    {
        private DispatcherTimer timer;

        public MainWindow()
        {
            InitializeComponent();

            // 创建计时器并设置间隔时间
            timer = new DispatcherTimer();
            timer.Interval = TimeSpan.FromSeconds(1);

            // 计时器Tick事件处理程序
            timer.Tick += Timer_Tick;

            // 启动计时器
            timer.Start();
        }

        private void Timer_Tick(object sender, EventArgs e)
        {
            // 在此处执行计时器每秒触发的操作
        }
    }
}