码迷,mamicode.com
首页 > 编程语言 > 详细

WPF 精修篇 长时间线程加取消功能

时间:2019-12-20 23:58:39      阅读:154      评论:0      收藏:0      [点我收藏+]

标签:奇数   details   thread   sdn   cell   enc   function   alignment   div   

原文:WPF 精修篇 长时间线程加取消功能

技术图片

  1. <Grid>
  2. <Grid.RowDefinitions>
  3. <RowDefinition Height="11*"/>
  4. <RowDefinition Height="29*"/>
  5. </Grid.RowDefinitions>
  6. <StackPanel Orientation="Horizontal" Margin="0" VerticalAlignment="Center">
  7. <Label>开始数据</Label>
  8. <TextBox x:Name="beginText" HorizontalAlignment="Left" Height="31" TextWrapping="Wrap" Text="100" VerticalAlignment="Top" Width="100"/>
  9. <Label>结束数据</Label>
  10. <TextBox x:Name="endText" HorizontalAlignment="Left" Height="31" TextWrapping="Wrap" Text="1000000000" VerticalAlignment="Top" Width="100"/>
  11. <Button x:Name="button" Content="开始" HorizontalAlignment="Center" VerticalAlignment="Center" Width="75" Click="Button_Click"/>
  12. <Button x:Name="Cancel" Content="取消" HorizontalAlignment="Center" VerticalAlignment="Center" Width="75" Click="Cancel_Click"/>
  13. </StackPanel>
  14. <StackPanel Margin="0" Grid.Row="1">
  15. <TextBlock x:Name="odd" TextWrapping="Wrap" Text="奇数数量:"/>
  16. <TextBlock x:Name="even" TextWrapping="Wrap" Text="偶数数量:"/>
  17. </StackPanel>
  18. </Grid>

 

  1. private int oddcount =0;
  2. private int evencount =0;
  3. public void Make(int from ,int to)
  4. {
  5. for (int i = from; i < to; i++)
  6. {
  7. if (TokenSource.IsCancellationRequested)
  8. {
  9. evencount = -1;
  10. oddcount = -1;
  11. return;
  12. }
  13. if (i % 2 == 0)
  14. {
  15. evencount++;
  16. }
  17. else
  18. {
  19. oddcount++;
  20. }
  21. }
  22. }
  23. private void Button_Click(object sender, RoutedEventArgs e)
  24. {
  25. int from=0;
  26. int to = 0;
  27. if(int.TryParse(beginText.Text,out from)&&int.TryParse(endText.Text,out to) )
  28. {
  29. button.IsEnabled = false;
  30. ThreadPool.QueueUserWorkItem(_ =>
  31. {
  32. TokenSource = new CancellationTokenSource();
  33. Make(from, to);
  34. Dispatcher.BeginInvoke(new Action(() =>
  35. {
  36. if (oddcount < 0 || evencount < 0)
  37. {
  38. odd.Text = "操作取消";
  39. even.Text = "操作取消";
  40. }
  41. else
  42. {
  43. odd.Text = "奇数数量:" + oddcount;
  44. even.Text = "偶数数量:" + evencount;
  45. }
  46. button.IsEnabled = true;
  47. }));
  48. });
  49. }
  50. }
  51. public CancellationTokenSource TokenSource = null;
  52. private void Cancel_Click(object sender, RoutedEventArgs e)
  53. {
  54. if (TokenSource != null)
  55. {
  56. TokenSource.Cancel();
  57. TokenSource = null;
  58. }
  59. }

 

WPF 精修篇 长时间线程加取消功能

标签:奇数   details   thread   sdn   cell   enc   function   alignment   div   

原文地址:https://www.cnblogs.com/lonelyxmas/p/12075537.html

(0)
(0)
   
举报
评论 一句话评论(0
登录后才能评论!
© 2014 mamicode.com 版权所有  联系我们:gaon5@hotmail.com
迷上了代码!