<Window x:Class="InheritDemo.Window1"xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"Title="Window1" Height="300" Width="300"><Grid><StackPanel><Label MouseEnter="Label_MouseEnter" MouseLeave="Label_MouseLeave">test1</Label></StackPanel></Grid>
</Window>

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using System.Threading;namespace InheritDemo
{/// <summary>/// Window1.xaml 的交互逻辑/// </summary>public partial class Window1 : Window{private Thread myThread = null;//定义线程private delegate void MyDelegate(Object para);//定义委托public Window1(){InitializeComponent();}/// <summary>/// 鼠标移入启动线程（继续挂起线程）/// </summary>/// <param name="sender"></param>/// <param name="e"></param>private void Label_MouseEnter(object sender, MouseEventArgs e){if (myThread == null)//启动线程
            {myThread = new Thread(ThreadMethod);myThread.IsBackground = true;//后台线程
                myThread.Start(sender);}else { myThread.Resume(); }//继续挂起线程
        }/// <summary>/// 鼠标移出挂起线程/// </summary>/// <param name="sender"></param>/// <param name="e"></param>private void Label_MouseLeave(object sender, MouseEventArgs e){if (myThread != null) { myThread.Suspend(); }//挂起线程
        }/// <summary>/// 线程事件调用委托/// </summary>/// <param name="para"></param>private void ThreadMethod(object para){MyDelegate myDelegate = new MyDelegate(DelegateMethod);while (true){this.Dispatcher.BeginInvoke(myDelegate, para);//调用委托Thread.Sleep(1000);//休眠1s
            }}/// <summary>/// 委托事件获取当前时间/// </summary>/// <param name="para"></param>private void DelegateMethod(object para){Label lbl = (Label)para;lbl.Content = DateTime.Now.ToString();}}
}