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VB.NET Task.Delay方法代码示例

本文整理汇总了VB.NET中System.Threading.Tasks.Task.Delay方法的典型用法代码示例。如果您正苦于以下问题:VB.NET Task.Delay方法的具体用法?VB.NET Task.Delay怎么用?VB.NET Task.Delay使用的例子?那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在System.Threading.Tasks.Task的用法示例。


在下文中一共展示了Task.Delay方法的6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.Threading
Imports System.Threading.Tasks

Module Example
   Public Sub Main()
      Dim source As New CancellationTokenSource()
      
      Dim t = Task.Run(Async Function()
                                Await Task.Delay(TimeSpan.FromSeconds(1.5),
                                                 source.Token)
                                Return 42
                       End Function)
      source.Cancel()
      Try
         t.Wait()
      Catch ae As AggregateException
         For Each e In ae.InnerExceptions
            Console.WriteLine("{0}: {1}", e.GetType().Name, e.Message)
         Next
      End Try
      Console.Write("Task t Status: {0}", t.Status)
      If t.Status = TaskStatus.RanToCompletion Then
         Console.Write(", Result: {0}", t.Result)
      End If
      source.Dispose()
   End Sub
End Module
开发者ID:VB.NET开发者,项目名称:System.Threading.Tasks,代码行数:28,代码来源:Task.Delay

输出:

TaskCanceledException: A task was canceled.
Task t Status: Canceled

示例2: Example

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

Module Example
   Public Sub Main()
      Dim source As New CancellationTokenSource()
      
      Dim t = Task.Run(Async Function()
                                Await Task.Delay(1000, source.Token)
                                Return 42
                       End Function)
      source.Cancel()
      Try
         t.Wait()
      Catch ae As AggregateException
         For Each e In ae.InnerExceptions
            Console.WriteLine("{0}: {1}", e.GetType().Name, e.Message)
         Next
      End Try
      Console.Write("Task t Status: {0}", t.Status)
      If t.Status = TaskStatus.RanToCompletion Then
         Console.Write(", Result: {0}", t.Result)
      End If
      source.Dispose()
   End Sub
End Module
开发者ID:VB.NET开发者,项目名称:System.Threading.Tasks,代码行数:27,代码来源:Task.Delay

输出:

TaskCanceledException: A task was canceled.
Task t Status: Canceled

示例3: Example

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

Module Example
   Public Sub Main()
      Dim t = Task.Run(Async Function()
                                Await Task.Delay(1000)
                                Return 42
                       End Function)
      t.Wait()
      Console.WriteLine("Task t Status: {0}, Result: {1}",
                        t.Status, t.Result)
   End Sub
End Module
开发者ID:VB.NET开发者,项目名称:System.Threading.Tasks,代码行数:14,代码来源:Task.Delay

输出:

Task t Status: RanToCompletion, Result: 42

示例4: Function

Dim sw As Stopwatch = Stopwatch.StartNew()
Dim delay1 = Task.Delay(1000)
Dim delay2 = delay1.ContinueWith( Function(antecedent)
                        sw.Stop()
                        Return sw.ElapsedMilliseconds
                      End Function)

Console.WriteLine("Elapsed milliseconds: {0}", delay2.Result)
开发者ID:VB.NET开发者,项目名称:System.Threading.Tasks,代码行数:8,代码来源:Task.Delay

输出:

Elapsed milliseconds: 1013

示例5: Function

Dim delay = Task.Run( Async Function()
                         Dim sw As Stopwatch = Stopwatch.StartNew()
                         Await Task.Delay(2500)
                         sw.Stop()
                         Return sw.ElapsedMilliseconds
                      End Function )

Console.WriteLine("Elapsed milliseconds: {0}", delay.Result)
开发者ID:VB.NET开发者,项目名称:System.Threading.Tasks,代码行数:8,代码来源:Task.Delay

输出:

Elapsed milliseconds: 2501

示例6: Example

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

Module Example
   Public Sub Main()
      Dim t = Task.Run(Async Function()
                                Await Task.Delay(TimeSpan.FromSeconds(1.5))
                                Return 42
                       End Function)
      t.Wait()
      Console.WriteLine("Task t Status: {0}, Result: {1}",
                        t.Status, t.Result)
   End Sub
End Module
开发者ID:VB.NET开发者,项目名称:System.Threading.Tasks,代码行数:14,代码来源:Task.Delay

输出:

Task t Status: RanToCompletion, Result: 42


注:本文中的System.Threading.Tasks.Task.Delay方法示例由纯净天空整理自Github/MSDocs等开源代码及文档管理平台,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。