1 using System;
 2 using System.Timers;
 3 using System.Windows;
 4 using System.Windows.Forms;
 5 namespace ControlUsed
 6 {
 7     
 8     public partial class MainWindow
 9     {
10 
11         public MainWindow()
12         {
13               Monitor.PartEvent += OnStep;//将该类中的函数注册到Monitor静态类的PartEvent事件中。
14         }
15         public  void OnStep(Object sender,MessageArgs message)
16         {
17           
18             Application.Current.Dispatcher.Invoke(new Action(() =>
19                 {
20                     MyTextBlock.Text = message.Txtmessage;//设置对应xaml中控件的属性
21                 }));
22         }
23      }
24 }

 1 public  class MessageArgs:EventArgs
 2     {
 3        public MessageArgs(string message)
 4        {
 5            this.TxtMessage = message;
 6        }
 7 
 8        public string TxtMessage { get; set; }
 9        
10     }

 1  public static class Monitor
 2     {
 3       public static event  EventHandler<MessageArgs> PartEvent;//定义在Monitor中的一个事件，参数是MessageArgs对象
 4 
 5       
 6       public static void InFunction(string message)
 7        {
 8            var messageArg = new MessageArgs
 9                {
10                    TxtMessage=message
11                };
12            if (PartEvent != null)//如果mainwindow构造函数中给PartEvent注册了函数就不为null
13            {
14                PartEvent(new object(), messageArg);//触发事件，执行所有注册过的函数
15            }
16        }
17 
18     public static bool MonitorCenter()
19        {
20          InFunction("change");//在外部类中修改TextBlock的Text
21        }
22 }