WPF的System.Windows.Threading.DispatcherTimer的使用(每隔一定的时间重复做某事)

这里使用了一个进度条来展示，

前段代码：

 <Window x:Class="TimerTest.MainWindow"
         xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
         Title="MainWindow" Height="" Width="">
     <Grid>
         <Button Content="Button" HorizontalAlignment="Left" Margin="241,249,0,0" VerticalAlignment="Top" Width="" Click="Button_Click"/>
         <ProgressBar x:Name="pb" Minimum="" Maximum="" HorizontalAlignment="Left" Height="" Margin="10,151,0,0" VerticalAlignment="Top" Width=""/>

     </Grid>
 </Window>

后台代码：

 using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
 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.Windows.Threading;

 namespace TimerTest
 {
     /// <summary>
     /// Interaction logic for MainWindow.xaml
     /// </summary>
     public partial class MainWindow : Window
     {
         public MainWindow()
         {
             InitializeComponent();
         }

         private void Button_Click(object sender, RoutedEventArgs e)
         {
             DispatcherTimer dispatcherTimer = new DispatcherTimer();
             dispatcherTimer.Tick += new EventHandler(dispatcherTimer_Tick);
             dispatcherTimer.Interval = new TimeSpan(, , );
             dispatcherTimer.Start();
         }

         private void dispatcherTimer_Tick(object sender, EventArgs e)
         {
             pb.Value += ;
         }
     }
 }