VB.NET TaskStatus枚举代码示例

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本文整理汇总了VB.NET中System.Threading.Tasks.TaskStatus枚举的典型用法代码示例。如果您正苦于以下问题：VB.NET TaskStatus枚举的具体用法？VB.NET TaskStatus怎么用？VB.NET TaskStatus使用的例子？那么恭喜您, 这里精选的枚举代码示例或许可以为您提供帮助。

在下文中一共展示了TaskStatus枚举的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于我们的系统推荐出更棒的VB.NET代码示例。

示例1: Example

' 导入命名空间
Imports System.Collections.Generic
Imports System.Threading
Imports System.Threading.Tasks

Module Example

   Public Sub Main()
      Dim tasks As New List(Of Task(Of Integer))()
      Dim source As New CancellationTokenSource
      Dim token As CancellationToken = source.Token
      Dim completedIterations As Integer = 0
      
      For n As Integer = 0 To 19
         tasks.Add(Task.Run( Function()
                                Dim iterations As Integer= 0
                                For ctr As Long = 1 To 2000000
                                   token.ThrowIfCancellationRequested()
                                   iterations += 1
                                Next
                                Interlocked.Increment(completedIterations)
                                If completedIterations >= 10 Then source.Cancel()
                                Return iterations
                             End Function, token))
      Next

      Console.WriteLine("Waiting for the first 10 tasks to complete... ")
      Try
         Task.WaitAll(tasks.ToArray())
      Catch e As AggregateException
         Console.WriteLine("Status of tasks:")
         Console.WriteLine()
         Console.WriteLine("{0,10} {1,20} {2,14}", "Task Id",
                           "Status", "Iterations")
         For Each t In tasks
            Console.WriteLine("{0,10} {1,20} {2,14}",
                              t.Id, t.Status,
                              If(t.Status <> TaskStatus.Canceled,
                                 t.Result.ToString("N0"), "n/a"))
         Next
      End Try
   End Sub
End Module

开发者ID:VB.NET开发者，项目名称:System.Threading.Tasks，代码行数:43，代码来源:TaskStatus

输出：

Waiting for the first 10 tasks to complete...
Status of tasks:

Task Id               Status     Iterations
1      RanToCompletion      2,000,000
2      RanToCompletion      2,000,000
3      RanToCompletion      2,000,000
4      RanToCompletion      2,000,000
5      RanToCompletion      2,000,000
6      RanToCompletion      2,000,000
7      RanToCompletion      2,000,000
8      RanToCompletion      2,000,000
9      RanToCompletion      2,000,000
10             Canceled            n/a
11             Canceled            n/a
12             Canceled            n/a
13             Canceled            n/a
14             Canceled            n/a
15             Canceled            n/a
16      RanToCompletion      2,000,000
17             Canceled            n/a
18             Canceled            n/a
19             Canceled            n/a
20             Canceled            n/a

注：本文中的System.Threading.Tasks.TaskStatus枚举示例由纯净天空整理自Github/MSDocs等源码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。