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VB.NET ConcurrentBag<T>类代码示例

本文整理汇总了VB.NET中System.Collections.Concurrent.ConcurrentBag<T>的典型用法代码示例。如果您正苦于以下问题:VB.NET ConcurrentBag<T>类的具体用法?VB.NET ConcurrentBag<T>怎么用?VB.NET ConcurrentBag<T>使用的例子?那么恭喜您, 这里精选的类代码示例或许可以为您提供帮助。


在下文中一共展示了ConcurrentBag<T>类的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,您的评价将有助于系统推荐出更棒的VB.NET代码示例。

示例1: ConcurrentBagDemo

' 导入命名空间
Imports System.Collections.Concurrent

Module ConcurrentBagDemo
    ' Demonstrates:
    ' ConcurrentBag<T>.Add()
    ' ConcurrentBag<T>.IsEmpty
    ' ConcurrentBag<T>.TryTake()
    ' ConcurrentBag<T>.TryPeek()
    Sub Main()
        ' Add to ConcurrentBag concurrently
        Dim cb As New ConcurrentBag(Of Integer)()
        Dim bagAddTasks As New List(Of Task)()
        For i = 1 To 500
            Dim numberToAdd As Integer = i
            bagAddTasks.Add(Task.Run(Sub() cb.Add(numberToAdd)))
        Next

        ' Wait for all tasks to complete
        Task.WaitAll(bagAddTasks.ToArray())

        ' Consume the items in the bag
        Dim bagConsumeTasks As New List(Of Task)()
        Dim itemsInBag As Integer = 0
        While Not cb.IsEmpty
            bagConsumeTasks.Add(Task.Run(Sub()
                                             Dim item As Integer
                                             If cb.TryTake(item) Then
                                                 Console.WriteLine(item)
                                                 itemsInBag = itemsInBag + 1
                                             End If
                                         End Sub))
        End While

        Task.WaitAll(bagConsumeTasks.ToArray())

        Console.WriteLine($"There were {itemsInBag} items in the bag")

        ' Checks the bag for an item
        ' The bag should be empty and this should not print anything
        Dim unexpectedItem As Integer
        If cb.TryPeek(unexpectedItem) Then
            Console.WriteLine("Found an item in the bag when it should be empty")
        End If
    End Sub
End Module
开发者ID:VB.NET开发者,项目名称:System.Collections.Concurrent,代码行数:46,代码来源:ConcurrentBag


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