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：

 1 <Window x:Class="TimerTest.MainWindow"
 2         xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
 3         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
 4         Title="MainWindow" Height="350" Width="525">
 5     <Grid>
 6         <Button Content="Button" HorizontalAlignment="Left" Margin="241,249,0,0" VerticalAlignment="Top" Width="75" Click="Button_Click"/>
 7         <ProgressBar x:Name="pb" Minimum="0" Maximum="100" HorizontalAlignment="Left" Height="93" Margin="10,151,0,0" VerticalAlignment="Top" Width="497"/>
 8
 9     </Grid>
10 </Window>

后台代码：

 1 using System;
 2 using System.Collections.Generic;
 3 using System.Linq;
 4 using System.Text;
 5 using System.Threading.Tasks;
 6 using System.Windows;
 7 using System.Windows.Controls;
 8 using System.Windows.Data;
 9 using System.Windows.Documents;
10 using System.Windows.Input;
11 using System.Windows.Media;
12 using System.Windows.Media.Imaging;
13 using System.Windows.Navigation;
14 using System.Windows.Shapes;
15 using System.Windows.Threading;
16
17 namespace TimerTest
18 {
19     /// <summary>
20     /// Interaction logic for MainWindow.xaml
21     /// </summary>
22     public partial class MainWindow : Window
23     {
24         public MainWindow()
25         {
26             InitializeComponent();
27         }
28
29         private void Button_Click(object sender, RoutedEventArgs e)
30         {
31             DispatcherTimer dispatcherTimer = new DispatcherTimer();
32             dispatcherTimer.Tick += new EventHandler(dispatcherTimer_Tick);
33             dispatcherTimer.Interval = new TimeSpan(0, 0, 1);
34             dispatcherTimer.Start();
35         }
36
37         private void dispatcherTimer_Tick(object sender, EventArgs e)
38         {
39             pb.Value += 3;
40         }
41     }
42 }